Jump to content
View in the app

A better way to browse. Learn more.
Forge Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Please read the rules and FAQ before starting a new topic
Currently supported: All versions

Forge Installer Libraries failed to download 1.14.2

EmperorTides
in Support & Bug Reports

Featured Replies

Posted

Can somewone help me? Ive been trying to fix this problem for awhile now
I bought the Original Minecraft just yesterday and wanted to try out some mods,
I went to forge to download it for mods and installed the Forge installer Ver 26.0.63 for MC 1.14.2
But whenever I Install the client I shows me this
https://imgur.com/a/ZAwOWyU

Can somewone please tell me what to do exactly to fix this?

  • Quote
    • Author

    Heres the Log 

     

    Spoiler

     

    JVM info: Oracle Corporation - 1.8.0_45 - 25.45-b02
    java.net.preferIPv4Stack=true
    Extracting json
    Extracting json
    Considering minecraft client jar
    Considering minecraft client jar
    Downloading libraries
    Downloading libraries
    Considering library net.minecraftforge:forge:1.14.2-26.0.63
      Extracting library from /maven/net/minecraftforge/forge/1.14.2-26.0.63/forge-1.14.2-26.0.63.jar
        Extraction completed: Checksum validated.
    Considering library org.ow2.asm:asm:6.2
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm/6.2/asm-6.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm-commons:6.2
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm-commons/6.2/asm-commons-6.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm-tree:6.2
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm-tree/6.2/asm-tree-6.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library cpw.mods:modlauncher:2.1.4
      Downloading library from https://files.minecraftforge.net/maven/cpw/mods/modlauncher/2.1.4/modlauncher-2.1.4.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library cpw.mods:grossjava9hacks:1.1.0
      Downloading library from https://files.minecraftforge.net/maven/cpw/mods/grossjava9hacks/1.1.0/grossjava9hacks-1.1.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:accesstransformers:0.16.0-shadowed
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/accesstransformers/0.16.0/accesstransformers-0.16.0-shadowed.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:eventbus:0.10.1-service
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/eventbus/0.10.1/eventbus-0.10.1-service.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:forgespi:0.13.0
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/forgespi/0.13.0/forgespi-0.13.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:coremods:0.5.0
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/coremods/0.5.0/coremods-0.5.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:unsafe:0.2.0
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/unsafe/0.2.0/unsafe-0.2.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.electronwill.night-config:core:3.6.0
      Downloading library from https://files.minecraftforge.net/maven/com/electronwill/night-config/core/3.6.0/core-3.6.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.electronwill.night-config:toml:3.6.0
      Downloading library from https://files.minecraftforge.net/maven/com/electronwill/night-config/toml/3.6.0/toml-3.6.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.jline:jline:3.9.0
      Downloading library from https://files.minecraftforge.net/maven/org/jline/jline/3.9.0/jline-3.9.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.apache.maven:maven-artifact:3.6.0
      Downloading library from https://files.minecraftforge.net/maven/org/apache/maven/maven-artifact/3.6.0/maven-artifact-3.6.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.jodah:typetools:0.6.0
      Downloading library from https://files.minecraftforge.net/maven/net/jodah/typetools/0.6.0/typetools-0.6.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library java3d:vecmath:1.5.2
      Downloading library from https://libraries.minecraft.net/java3d/vecmath/1.5.2/vecmath-1.5.2.jar
        Download completed: Checksum validated.
    Considering library org.apache.logging.log4j:log4j-api:2.11.2
      Downloading library from https://files.minecraftforge.net/maven/org/apache/logging/log4j/log4j-api/2.11.2/log4j-api-2.11.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.apache.logging.log4j:log4j-core:2.11.2
      Downloading library from https://files.minecraftforge.net/maven/org/apache/logging/log4j/log4j-core/2.11.2/log4j-core-2.11.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecrell:terminalconsoleappender:1.1.1
      Downloading library from https://files.minecraftforge.net/maven/net/minecrell/terminalconsoleappender/1.1.1/terminalconsoleappender-1.1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.sf.jopt-simple:jopt-simple:5.0.4
      Downloading library from https://files.minecraftforge.net/maven/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.github.jponge:lzma-java:1.3
      Downloading library from https://files.minecraftforge.net/maven/com/github/jponge/lzma-java/1.3/lzma-java-1.3.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.google.code.findbugs:jsr305:3.0.2
      Downloading library from https://files.minecraftforge.net/maven/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.google.code.gson:gson:2.8.0
      File exists: Checksum validated.
    Considering library com.google.errorprone:error_prone_annotations:2.1.3
      Downloading library from https://files.minecraftforge.net/maven/com/google/errorprone/error_prone_annotations/2.1.3/error_prone_annotations-2.1.3.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.google.guava:guava:20.0
      Downloading library from https://files.minecraftforge.net/maven/com/google/guava/guava/20.0/guava-20.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.google.guava:guava:25.1-jre
      Downloading library from https://files.minecraftforge.net/maven/com/google/guava/guava/25.1-jre/guava-25.1-jre.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.google.j2objc:j2objc-annotations:1.1
      Downloading library from https://files.minecraftforge.net/maven/com/google/j2objc/j2objc-annotations/1.1/j2objc-annotations-1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library com.nothome:javaxdelta:2.0.1
      Downloading library from https://files.minecraftforge.net/maven/com/nothome/javaxdelta/2.0.1/javaxdelta-2.0.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library commons-io:commons-io:2.4
      Downloading library from https://libraries.minecraft.net/commons-io/commons-io/2.4/commons-io-2.4.jar
        Download completed: Checksum validated.
    Considering library de.oceanlabs.mcp:mcp_config:1.14.2-20190603.175704@zip
      Downloading library from https://files.minecraftforge.net/maven/de/oceanlabs/mcp/mcp_config/1.14.2-20190603.175704/mcp_config-1.14.2-20190603.175704.zip
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.md-5:SpecialSource:1.8.3
      Downloading library from https://files.minecraftforge.net/maven/net/md-5/SpecialSource/1.8.3/SpecialSource-1.8.3.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:binarypatcher:1.0.5
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/binarypatcher/1.0.5/binarypatcher-1.0.5.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:forge:1.14.2-26.0.63:universal
      Extracting library from /maven/net/minecraftforge/forge/1.14.2-26.0.63/forge-1.14.2-26.0.63-universal.jar
        Extraction completed: Checksum validated.
    Considering library net.minecraftforge:installertools:1.0.3
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/installertools/1.0.3/installertools-1.0.3.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.minecraftforge:jarsplitter:1.1.0
      Downloading library from https://files.minecraftforge.net/maven/net/minecraftforge/jarsplitter/1.1.0/jarsplitter-1.1.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.sf.jopt-simple:jopt-simple:4.9
      Downloading library from https://files.minecraftforge.net/maven/net/sf/jopt-simple/jopt-simple/4.9/jopt-simple-4.9.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.sf.jopt-simple:jopt-simple:5.0.4
      Downloading library from https://files.minecraftforge.net/maven/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library net.sf.opencsv:opencsv:2.3
      Downloading library from https://files.minecraftforge.net/maven/net/sf/opencsv/opencsv/2.3/opencsv-2.3.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.checkerframework:checker-qual:2.0.0
      Downloading library from https://files.minecraftforge.net/maven/org/checkerframework/checker-qual/2.0.0/checker-qual-2.0.0.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.codehaus.mojo:animal-sniffer-annotations:1.14
      Downloading library from https://files.minecraftforge.net/maven/org/codehaus/mojo/animal-sniffer-annotations/1.14/animal-sniffer-annotations-1.14.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm-analysis:6.1.1
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm-analysis/6.1.1/asm-analysis-6.1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm-commons:6.1.1
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm-commons/6.1.1/asm-commons-6.1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm-tree:6.1.1
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm-tree/6.1.1/asm-tree-6.1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library org.ow2.asm:asm:6.1.1
      Downloading library from https://files.minecraftforge.net/maven/org/ow2/asm/asm/6.1.1/asm-6.1.1.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    Considering library trove:trove:1.0.2
      Downloading library from https://files.minecraftforge.net/maven/trove/trove/1.0.2/trove-1.0.2.jar
    javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:203)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:144)
        at net.minecraftforge.installer.DownloadUtils.download(DownloadUtils.java:134)
        at net.minecraftforge.installer.DownloadUtils.downloadLibrary(DownloadUtils.java:123)
        at net.minecraftforge.installer.actions.Action.downloadLibraries(Action.java:79)
        at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:108)
        at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:428)
        at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:166)
        at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:139)
    Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 23 more
    Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 29 more
    These libraries failed to download. Try again.

    org.ow2.asm:asm:6.2
    org.ow2.asm:asm-commons:6.2
    org.ow2.asm:asm-tree:6.2
    cpw.mods:modlauncher:2.1.4
    cpw.mods:grossjava9hacks:1.1.0
    net.minecraftforge:accesstransformers:0.16.0-shadowed
    net.minecraftforge:eventbus:0.10.1-service
    net.minecraftforge:forgespi:0.13.0
    net.minecraftforge:coremods:0.5.0
    net.minecraftforge:unsafe:0.2.0
    com.electronwill.night-config:core:3.6.0
    com.electronwill.night-config:toml:3.6.0
    org.jline:jline:3.9.0
    org.apache.maven:maven-artifact:3.6.0
    net.jodah:typetools:0.6.0
    org.apache.logging.log4j:log4j-api:2.11.2
    org.apache.logging.log4j:log4j-core:2.11.2
    net.minecrell:terminalconsoleappender:1.1.1
    net.sf.jopt-simple:jopt-simple:5.0.4
    com.github.jponge:lzma-java:1.3
    com.google.code.findbugs:jsr305:3.0.2
    com.google.errorprone:error_prone_annotations:2.1.3
    com.google.guava:guava:20.0
    com.google.guava:guava:25.1-jre
    com.google.j2objc:j2objc-annotations:1.1
    com.nothome:javaxdelta:2.0.1
    de.oceanlabs.mcp:mcp_config:1.14.2-20190603.175704@zip
    net.md-5:SpecialSource:1.8.3
    net.minecraftforge:binarypatcher:1.0.5
    net.minecraftforge:installertools:1.0.3
    net.minecraftforge:jarsplitter:1.1.0
    net.sf.jopt-simple:jopt-simple:4.9
    net.sf.jopt-simple:jopt-simple:5.0.4
    net.sf.opencsv:opencsv:2.3
    org.checkerframework:checker-qual:2.0.0
    org.codehaus.mojo:animal-sniffer-annotations:1.14
    org.ow2.asm:asm-analysis:6.1.1
    org.ow2.asm:asm-commons:6.1.1
    org.ow2.asm:asm-tree:6.1.1
    org.ow2.asm:asm:6.1.1
    trove:trove:1.0.2
    These libraries failed to download. Try again.

    org.ow2.asm:asm:6.2
    org.ow2.asm:asm-commons:6.2
    org.ow2.asm:asm-tree:6.2
    cpw.mods:modlauncher:2.1.4
    cpw.mods:grossjava9hacks:1.1.0
    net.minecraftforge:accesstransformers:0.16.0-shadowed
    net.minecraftforge:eventbus:0.10.1-service
    net.minecraftforge:forgespi:0.13.0
    net.minecraftforge:coremods:0.5.0
    net.minecraftforge:unsafe:0.2.0
    com.electronwill.night-config:core:3.6.0
    com.electronwill.night-config:toml:3.6.0
    org.jline:jline:3.9.0
    org.apache.maven:maven-artifact:3.6.0
    net.jodah:typetools:0.6.0
    org.apache.logging.log4j:log4j-api:2.11.2
    org.apache.logging.log4j:log4j-core:2.11.2
    net.minecrell:terminalconsoleappender:1.1.1
    net.sf.jopt-simple:jopt-simple:5.0.4
    com.github.jponge:lzma-java:1.3
    com.google.code.findbugs:jsr305:3.0.2
    com.google.errorprone:error_prone_annotations:2.1.3
    com.google.guava:guava:20.0
    com.google.guava:guava:25.1-jre
    com.google.j2objc:j2objc-annotations:1.1
    com.nothome:javaxdelta:2.0.1
    de.oceanlabs.mcp:mcp_config:1.14.2-20190603.175704@zip
    net.md-5:SpecialSource:1.8.3
    net.minecraftforge:binarypatcher:1.0.5
    net.minecraftforge:installertools:1.0.3
    net.minecraftforge:jarsplitter:1.1.0
    net.sf.jopt-simple:jopt-simple:4.9
    net.sf.jopt-simple:jopt-simple:5.0.4
    net.sf.opencsv:opencsv:2.3
    org.checkerframework:checker-qual:2.0.0
    org.codehaus.mojo:animal-sniffer-annotations:1.14
    org.ow2.asm:asm-analysis:6.1.1
    org.ow2.asm:asm-commons:6.1.1
    org.ow2.asm:asm-tree:6.1.1
    org.ow2.asm:asm:6.1.1
    trove:trove:1.0.2

     

     

    Edited by DaemonUmbra
    Text Wall Moved to Spoiler

  • Quote
    • Author
    1 hour ago, diesieben07 said:

    Update to latest Java 8, yours is way outdated.

    Thanks for the help Could you please send a link to where I can download the latest version?

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
    Reply to this topic...
    Go to topic listing

    Important Information

    By using this site, you agree to our Terms of Use.

    I accept

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.