1

This is the error shown in UI

Error validating repository information. Credentials ok.
java.io.FileNotFoundException: https://api.github.com/repos/xxxxx/xxxxxxxx
    at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$OkHttpURLConnection.getInputStream(ObsoleteUrlFactory.java:488)
    at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$DelegatingHttpsURLConnection.getInputStream(ObsoleteUrlFactory.java:1201)
    at org.kohsuke.github.GitHubHttpUrlConnectionClient$HttpURLConnectionResponseInfo.bodyStream(GitHubHttpUrlConnectionClient.java:197)
    at org.kohsuke.github.GitHubResponse$ResponseInfo.getBodyAsString(GitHubResponse.java:326)
    at org.kohsuke.github.GitHubResponse.parseBody(GitHubResponse.java:91)
    at org.kohsuke.github.Requester.lambda$fetch$1(Requester.java:74)
    at org.kohsuke.github.GitHubClient.createResponse(GitHubClient.java:461)
    at org.kohsuke.github.GitHubClient.sendRequest(GitHubClient.java:412)
Caused: org.kohsuke.github.GHFileNotFoundException: https://api.github.com/repos/xxxxx/xxxxxxxx {"message":"Not Found","documentation_url":"https://docs.github.com/rest/reference/repos#get-a-repository"}
    at org.kohsuke.github.GitHubClient.interpretApiError(GitHubClient.java:492)
    at org.kohsuke.github.GitHubClient.sendRequest(GitHubClient.java:420)
    at org.kohsuke.github.GitHubClient.sendRequest(GitHubClient.java:363)
    at org.kohsuke.github.Requester.fetch(Requester.java:74)
    at org.kohsuke.github.GHRepository.read(GHRepository.java:117)
    at org.kohsuke.github.GitHub.getRepository(GitHub.java:549)
    at org.jenkinsci.plugins.github_branch_source.GitHubSCMSource$DescriptorImpl.doValidateRepositoryUrlAndCredentials(GitHubSCMSource.java:2033)
    at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:710)
    at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396)
    at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:408)
    at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:77)
    at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)
    at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:212)
    at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:145)
    at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:536)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:281)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
    at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:281)
    at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
    at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
    at org.kohsuke.stapler.Stapler.invoke(Stapler.java:694)
    at org.kohsuke.stapler.Stapler.service(Stapler.java:240)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1631)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
    at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:248)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at jenkins.telemetry.impl.UserLanguages$AcceptLanguageFilter.doFilter(UserLanguages.java:129)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at jenkins.security.ResourceDomainFilter.doFilter(ResourceDomainFilter.java:76)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at com.atlassian.bitbucket.jenkins.internal.applink.oauth.serviceprovider.auth.OAuth1aRequestFilter.doFilter(OAuth1aRequestFilter.java:109)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at io.jenkins.blueocean.ResourceCacheControl.doFilter(ResourceCacheControl.java:134)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at io.jenkins.blueocean.auth.jwt.impl.JwtAuthenticationFilter.doFilter(JwtAuthenticationFilter.java:60)
    at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
    at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:153)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
    at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
    at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
    at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
    at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
    at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:51)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:36)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1618)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:549)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1369)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:489)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580)
    at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1284)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
    at org.eclipse.jetty.server.Server.handle(Server.java:501)
    at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
    at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:272)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
    at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
    at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
    at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
    at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
    at java.base/java.lang.Thread.run(Thread.java:834)
1

I encountered the same issue when using the GitHub Branch Source Plugin in Jenkins as part of a multibranch pipeline. The documentation for the credentials configuration states:

Credentials used to scan branches and pull requests, check out sources and mark commit statuses.

Note that only "username with password" credentials are supported. Existing credentials of other kinds will be filtered out. This is because Jenkins uses the GitHub API, which does not support other ways of authentication.

If none is given, only the public repositories will be scanned, and commit status will not be set on GitHub.

If your organization contains private repositories, then you need to specify a credential from a user who has access to those repositories. This is done by creating a "username with password" credential where the password is GitHub personal access tokens. The necessary scope is "repo".

After creating a new Personal Access Token (PAT) in GitHub with 'repo' scope, I added the PAT into the Jenkins Credentials manager as type 'Username and Password' (username was the GitHub account username for which the PAT was created). I then went back to my job configuration in Jenkins and ensured that my new credentials were being used for the GitHub branch source, which validated successfully.

I'm unsure if this answer applies to the context where you saw this issue (as there isn't too much detail in your question) but hopefully this answer will be useful for someone else in a similar position - as I didn't find many documented instances of this error.

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