title: How can I resolve this error from Jenkins?
body: <p>I'm new to macOS. I have installed latest Jenkins LTS (2.89.2) on my machine. Now I'm getting this message on the Jenkins home URL:</p>
  
  <blockquote>
    <p>A problem occurred while processing the request. Please check our bug tracker to see if a similar problem has already been reported. If it is already reported, please vote and put a comment on it to let us gauge the impact of the problem. If you think this is a new issue, please file a new issue. When you file an issue, make sure to add the entire stack trace, along with the version of Jenkins and relevant plugins. The users list might be also useful in understanding what has happened.</p>
  </blockquote>
  
  <p>Stack trace:</p>
  
  <pre><code>java.lang.AssertionError: InstanceIdentity is missing its singleton
      at org.jenkinsci.main.modules.instance_identity.InstanceIdentity.get(InstanceIdentity.java:133)
      at org.jenkinsci.main.modules.instance_identity.InstanceIdentityRSAProvider.getKeyPair(InstanceIdentityRSAProvider.java:23)
      at jenkins.model.identity.InstanceIdentityProvider$KeyTypes.get(InstanceIdentityProvider.java:161)
      at jenkins.model.identity.InstanceIdentityProvider$KeyTypes.getKeyPair(InstanceIdentityProvider.java:210)
      at jenkins.model.identity.IdentityRootAction.getUrlName(IdentityRootAction.java:42)
      at jenkins.model.Jenkins.getUnprotectedRootActions(Jenkins.java:4670)
      at jenkins.model.Jenkins.isSubjectToMandatoryReadPermissionCheck(Jenkins.java:4642)
      at jenkins.model.Jenkins.getTarget(Jenkins.java:4620)
      at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:674)
      at org.kohsuke.stapler.Stapler.invoke(Stapler.java:845)
      at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
      at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
      at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1650)
      at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)
      at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:138)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
      at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:91)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
      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:117)
      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:135)
      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:1637)
      at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
      at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
      at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
      at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637)
      at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
      at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190)
      at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)
      at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)
      at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)
      at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)
      at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)
      at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)
      at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
      at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)
      at org.eclipse.jetty.server.Server.handle(Server.java:564)
      at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:317)
      at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
      at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)
      at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110)
      at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)
      at org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:128)
      at org.eclipse.jetty.util.thread.Invocable$InvocableExecutor.invoke(Invocable.java:222)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:294)
      at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:199)
      at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
      at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
      at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
      at java.base/java.lang.Thread.run(Thread.java:844)
  </code></pre>
  
  <p>Java-version in my machine:
  <a href="https://i.stack.imgur.com/keAge.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/keAge.png" alt="enter image description here"></a> </p>
  
  <p>Error Message Snapshot:
  <a href="https://i.stack.imgur.com/Kmlq9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Kmlq9.png" alt="enter image description here"></a></p>