End_nether

I tried to download 1.14.3,but it is not work too,how can I slove this problem?

so should I uninstall old ver of java？

This is a part of logs: Extracting json Considering minecraft client jar Downloading libraries Considering library net.minecraftforge:forge:1.14.4-28.0.20 File exists: 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) Please help me ASAP