Hello, Ive been using Badlion client for a while so i havent needed it, But Forge has been unwilling to install for a long time. I recently needed to use litematica and without forge i cant install it, so I need Forge to install so I can use original minecraft with litematica.

 

At first the error i had been having was two missing files; com.google.code.findbugs » jsr305 | And Commons Io 2.4

I Downloaded and replaced those and fixed that error, and began recieving this error message: Failed to run processor: 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

Full Log;

 

JVM info: Oracle Corporation - 1.8.0_51 - 25.51-b03
java.net.preferIPv4Stack=true
Found java version 1.8.0_51
Added Lets Encrypt root certificates as additional trust
Extracting json
Considering minecraft client jar
Downloading libraries
Found 0 additional library directories
Considering library cpw.mods:securejarhandler:2.1.4
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-util:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.3
  File exists: Checksum validated.
Considering library net.minecraftforge:accesstransformers:8.0.4
  File exists: Checksum validated.
Considering library org.antlr:antlr4-runtime:4.9.1
  File exists: Checksum validated.
Considering library net.minecraftforge:eventbus:6.0.3
  File exists: Checksum validated.
Considering library net.minecraftforge:forgespi:6.0.0
  File exists: Checksum validated.
Considering library net.minecraftforge:coremods:5.0.1
  File exists: Checksum validated.
Considering library cpw.mods:modlauncher:10.0.8
  File exists: Checksum validated.
Considering library net.minecraftforge:unsafe:0.2.0
  File exists: Checksum validated.
Considering library com.electronwill.night-config:core:3.6.4
  File exists: Checksum validated.
Considering library com.electronwill.night-config:toml:3.6.4
  File exists: Checksum validated.
Considering library org.apache.maven:maven-artifact:3.8.5
  File exists: Checksum validated.
Considering library net.jodah:typetools:0.8.3
  File exists: Checksum validated.
Considering library net.minecrell:terminalconsoleappender:1.2.0
  File exists: Checksum validated.
Considering library org.jline:jline-reader:3.12.1
  File exists: Checksum validated.
Considering library org.jline:jline-terminal:3.12.1
  File exists: Checksum validated.
Considering library org.spongepowered:mixin:0.8.5
  File exists: Checksum validated.
Considering library org.openjdk.nashorn:nashorn-core:15.3
  File exists: Checksum validated.
Considering library net.minecraftforge:JarJarSelector:0.3.19
  File exists: Checksum validated.
Considering library net.minecraftforge:JarJarMetadata:0.3.19
  File exists: Checksum validated.
Considering library cpw.mods:bootstraplauncher:1.1.2
  File exists: Checksum validated.
Considering library net.minecraftforge:JarJarFileSystems:0.3.19
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library com.github.jponge:lzma-java:1.3
  File exists: Checksum validated.
Considering library com.google.code.findbugs:jsr305:3.0.2
  File exists: Checksum validated.
Considering library com.google.code.gson:gson:2.8.7
  File exists: Checksum validated.
Considering library com.google.errorprone:error_prone_annotations:2.1.3
  File exists: Checksum validated.
Considering library com.google.guava:guava:20.0
  File exists: Checksum validated.
Considering library com.google.guava:guava:25.1-jre
  File exists: Checksum validated.
Considering library com.google.j2objc:j2objc-annotations:1.1
  File exists: Checksum validated.
Considering library com.nothome:javaxdelta:2.0.1
  File exists: Checksum validated.
Considering library com.opencsv:opencsv:4.4
  File exists: Checksum validated.
Considering library commons-beanutils:commons-beanutils:1.9.3
  File exists: Checksum validated.
Considering library commons-collections:commons-collections:3.2.2
  File exists: Checksum validated.
Considering library commons-io:commons-io:2.4
  File exists: Checksum validated.
Considering library commons-logging:commons-logging:1.2
  File exists: Checksum validated.
Considering library de.oceanlabs.mcp:mcp_config:1.19.3-20221207.122022@zip
  File exists: Checksum validated.
Considering library de.siegmar:fastcsv:2.0.0
  File exists: Checksum validated.
Considering library net.md-5:SpecialSource:1.11.0
  File exists: Checksum validated.
Considering library net.minecraftforge:ForgeAutoRenamingTool:0.1.22:all
  File exists: Checksum validated.
Considering library net.minecraftforge:binarypatcher:1.1.1
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlcore:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library net.minecraftforge:forge:1.19.3-44.1.0:universal
  File exists: Checksum validated.
Considering library net.minecraftforge:installertools:1.3.0
  File exists: Checksum validated.
Considering library net.minecraftforge:jarsplitter:1.1.4
  File exists: Checksum validated.
Considering library net.minecraftforge:javafmllanguage:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library net.minecraftforge:lowcodelanguage:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library net.minecraftforge:mclanguage:1.19.3-44.1.0
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.11
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.3
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.9
  File exists: Checksum validated.
Considering library net.sf.jopt-simple:jopt-simple:5.0.4
  File exists: Checksum validated.
Considering library net.sf.jopt-simple:jopt-simple:6.0-alpha-3
  File exists: Checksum validated.
Considering library org.apache.commons:commons-collections4:4.2
  File exists: Checksum validated.
Considering library org.apache.commons:commons-lang3:3.8.1
  File exists: Checksum validated.
Considering library org.apache.commons:commons-text:1.3
  File exists: Checksum validated.
Considering library org.checkerframework:checker-qual:2.0.0
  File exists: Checksum validated.
Considering library org.codehaus.mojo:animal-sniffer-annotations:1.14
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.3
  File exists: Checksum validated.
Considering library trove:trove:1.0.2
  File exists: Checksum validated.
Created Temporary Directory: C:\Users\willb\AppData\Local\Temp\forge_installer3616426589115899493
  Extracting: /data/client.lzma
Building Processors
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.3.0\installertools-1.3.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.11.0\SpecialSource-1.11.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.11\srgutils-0.4.11.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.3\asm-commons-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.3\asm-analysis-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.3\asm-tree-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.3\asm-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, MCP_DATA, --input, C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.19.3-20221207.122022\mcp_config-1.19.3-20221207.122022.zip, --output, C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.19.3-20221207.122022\mcp_config-1.19.3-20221207.122022-mappings.txt, --key, mappings
Task: MCP_DATA
Input:  C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.19.3-20221207.122022\mcp_config-1.19.3-20221207.122022.zip
Output: C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.19.3-20221207.122022\mcp_config-1.19.3-20221207.122022-mappings.txt
Key:    mappings
Extracting: config/joined.tsrg
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.3.0\installertools-1.3.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.11.0\SpecialSource-1.11.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.11\srgutils-0.4.11.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.3\asm-commons-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.3\asm-analysis-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.3\asm-tree-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.3\asm-9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\willb\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, DOWNLOAD_MOJMAPS, --version, 1.19.3, --side, client, --output, C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.19.3-20221207.122022\client-1.19.3-20221207.122022-mappings.txt
Task: DOWNLOAD_MOJMAPS
MC Version: 1.19.3
Side:       client
Output:     C:\Users\willb\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.19.3-20221207.122022\client-1.19.3-20221207.122022-mappings.txt
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 sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
    at java.net.URL.openStream(Unknown Source)
    at net.minecraftforge.installertools.DownloadMojmaps.process(DownloadMojmaps.java:65)
    at net.minecraftforge.installertools.ConsoleTool.main(ConsoleTool.java:55)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraftforge.installer.actions.PostProcessors.process(PostProcessors.java:226)
    at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:144)
    at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:423)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:175)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)
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)
    ... 25 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)
    ... 31 more
Failed to run processor: 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
See log for more details.