Help me when I try to download forge it give me an error

[BribeB]

Help me when I try to install forge it give me an error when it tries to "Building Processors"

here's the log after trying to install it.

Filename: forge-1.17.1-37.1.1-installer.jar.log

error: 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

 

JVM info: Oracle Corporation - 1.8.0_311 - 25.311-b11
java.net.preferIPv4Stack=true
Found java version 1.8.0_311
Extracting json
Considering minecraft client jar
Downloading libraries
Found 0 additional library directories
Considering library cpw.mods:securejarhandler:0.9.54
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-util:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.1
  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:5.0.3
  File exists: Checksum validated.
Considering library net.minecraftforge:forgespi:4.0.10
  File exists: Checksum validated.
Considering library net.minecraftforge:coremods:5.0.1
  File exists: Checksum validated.
Considering library cpw.mods:modlauncher:9.0.7
  File exists: Checksum validated.
Considering library net.minecraftforge:unsafe:0.2.0
  File exists: Checksum validated.
Considering library com.electronwill.night-config:core:3.6.3
  File exists: Checksum validated.
Considering library com.electronwill.night-config:toml:3.6.3
  File exists: Checksum validated.
Considering library org.apache.maven:maven-artifact:3.6.3
  File exists: Checksum validated.
Considering library org.apache.commons:commons-lang3:3.8.1
  File exists: Checksum validated.
Considering library net.jodah:typetools:0.8.3
  File exists: Checksum validated.
Considering library org.apache.logging.log4j:log4j-api:2.15.0
  File exists: Checksum validated.
Considering library org.apache.logging.log4j:log4j-core:2.15.0
  File exists: Checksum validated.
Considering library org.apache.logging.log4j:log4j-slf4j18-impl:2.15.0
  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 net.sf.jopt-simple:jopt-simple:5.0.4
  File exists: Checksum validated.
Considering library org.spongepowered:mixin:0.8.4
  File exists: Checksum validated.
Considering library org.openjdk.nashorn:nashorn-core:15.3
  File exists: Checksum validated.
Considering library com.google.guava:guava:21.0
  File exists: Checksum validated.
Considering library com.google.code.gson:gson:2.8.0
  File exists: Checksum validated.
Considering library cpw.mods:bootstraplauncher:0.1.17
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.17.1-37.1.1
  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.errorprone:error_prone_annotations:2.3.4
  File exists: Checksum validated.
Considering library com.google.guava:failureaccess:1.0.1
  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.guava:guava:30.1-android
  File exists: Checksum validated.
Considering library com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava
  File exists: Checksum validated.
Considering library com.google.j2objc:j2objc-annotations:1.1
  File exists: Checksum validated.
Considering library com.google.j2objc:j2objc-annotations:1.3
  File exists: Checksum validated.
Considering library com.google.jimfs:jimfs:1.2
  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:1.17.1-20210706.113038@zip
  File exists: Checksum validated.
Considering library de.siegmar:fastcsv:2.0.0
  File exists: Checksum validated.
Considering library net.md-5:SpecialSource:1.10.0
  File exists: Checksum validated.
Considering library net.minecraftforge.lex:vignette:0.2.0.16
  File exists: Checksum validated.
Considering library net.minecraftforge:binarypatcher:1.0.12
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlcore:1.17.1-37.1.1
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.17.1-37.1.1
  File exists: Checksum validated.
Considering library net.minecraftforge:forge:1.17.1-37.1.1:universal
  File exists: Checksum validated.
Considering library net.minecraftforge:installertools:1.2.7
  File exists: Checksum validated.
Considering library net.minecraftforge:jarsplitter:1.1.4
  File exists: Checksum validated.
Considering library net.minecraftforge:javafmllanguage:1.17.1-37.1.1
  File exists: Checksum validated.
Considering library net.minecraftforge:mclanguage:1.17.1-37.1.1
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.3
  File exists: Checksum validated.
Considering library net.sf.jopt-simple:jopt-simple:5.0.4
  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.cadixdev:atlas:0.2.2
  File exists: Checksum validated.
Considering library org.cadixdev:bombe-asm:0.3.5
  File exists: Checksum validated.
Considering library org.cadixdev:bombe:0.3.5
  File exists: Checksum validated.
Considering library org.cadixdev:lorenz-asm:0.5.7
  File exists: Checksum validated.
Considering library org.cadixdev:lorenz:0.5.7
  File exists: Checksum validated.
Considering library org.checkerframework:checker-compat-qual:2.5.5
  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:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.1
  File exists: Checksum validated.
Considering library trove:trove:1.0.2
  File exists: Checksum validated.
Created Temporary Directory: C:\Users\Sever\AppData\Local\Temp\forge_installer6528948397606838026
  Extracting: /data/client.lzma
Building Processors
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.2.7\installertools-1.2.7.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.10.0\SpecialSource-1.10.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.3\srgutils-0.4.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.1\asm-commons-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.1\asm-analysis-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.1\asm-tree-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.1\asm-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, MCP_DATA, --input, C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.17.1-20210706.113038\mcp_config-1.17.1-20210706.113038.zip, --output, C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.17.1-20210706.113038\mcp_config-1.17.1-20210706.113038-mappings.txt, --key, mappings
Task: MCP_DATA
Input:  C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.17.1-20210706.113038\mcp_config-1.17.1-20210706.113038.zip
Output: C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.17.1-20210706.113038\mcp_config-1.17.1-20210706.113038-mappings.txt
Key:    mappings
Extracting: config/joined.tsrg
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.2.7\installertools-1.2.7.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.10.0\SpecialSource-1.10.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.3\srgutils-0.4.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.1\asm-commons-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.1\asm-analysis-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.1\asm-tree-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.1\asm-9.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\Sever\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, DOWNLOAD_MOJMAPS, --version, 1.17.1, --side, client, --output, C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.17.1-20210706.113038\client-1.17.1-20210706.113038-mappings.txt
Task: DOWNLOAD_MOJMAPS
MC Version: 1.17.1
Side:       client
Output:     C:\Users\Sever\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.17.1-20210706.113038\client-1.17.1-20210706.113038-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.Alert.createSSLException(Unknown Source)
    at sun.security.ssl.TransportContext.fatal(Unknown Source)
    at sun.security.ssl.TransportContext.fatal(Unknown Source)
    at sun.security.ssl.TransportContext.fatal(Unknown Source)
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(Unknown Source)
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(Unknown Source)
    at sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(Unknown Source)
    at sun.security.ssl.SSLHandshake.consume(Unknown Source)
    at sun.security.ssl.HandshakeContext.dispatch(Unknown Source)
    at sun.security.ssl.HandshakeContext.dispatch(Unknown Source)
    at sun.security.ssl.TransportContext.dispatch(Unknown Source)
    at sun.security.ssl.SSLTransport.decode(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.decode(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(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)
    ... 29 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)
    ... 35 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.