I had the same problem with my Jenkins installation. We are using Active Directory with automatic discovery of the domain (i.e. Custom Domain is not checked). For our authorization setting, we are using Project-based Matrix Authorization Strategy.
In the error log, I found these new exceptions:
2019-05-21 21:07:27.092+0000 [id=126357] WARNING o.e.jetty.server.HttpChannel#handleException: /updateCenter/2019-05-21 21:07:27.092+0000 [id=126357] WARNING o.e.jetty.server.HttpChannel#handleException: /updateCenter/java.lang.NullPointerException at org.jenkinsci.plugins.matrixauth.AuthorizationContainer.hasPermission(AuthorizationContainer.java:162) at hudson.security.GlobalMatrixAuthorizationStrategy$AclImpl.hasPermission(GlobalMatrixAuthorizationStrategy.java:127) at hudson.security.SidACL._hasPermission(SidACL.java:70) at hudson.security.SidACL.hasPermission(SidACL.java:52) at hudson.security.ACL.checkPermission(ACL.java:72) at hudson.security.AccessControlled.checkPermission(AccessControlled.java:47) at jenkins.model.Jenkins.getTarget(Jenkins.java:4698) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:703) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:878) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:676) at hudson.init.impl.InstallUncaughtExceptionHandler.lambda$init$0(InstallUncaughtExceptionHandler.java:32) at hudson.init.impl.InstallUncaughtExceptionHandler$$Lambda$42/27557199.reportException(Unknown Source) at org.kohsuke.stapler.compression.CompressionFilter.reportException(CompressionFilter.java:77) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:58) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) 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:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:505) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:698) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:804) at java.lang.Thread.run(Unknown Source)2019-05-21 21:07:27.108+0000 [id=126357] WARNING o.e.jetty.server.HttpChannel#handleException: ERROR dispatch failedAlso: java.lang.IllegalStateException: Expected 1 instance of hudson.model.User$AllUsers but got 0 at hudson.ExtensionList.lookupSingleton(ExtensionList.java:451) at hudson.model.User$AllUsers.getInstance(User.java:1080) at hudson.model.User$AllUsers.get(User.java:1098) at hudson.model.User$AllUsers.access$100(User.java:1061) at hudson.model.User.getOrCreateById(User.java:517) at hudson.model.User.getById(User.java:615) at hudson.security.HttpSessionContextIntegrationFilter2.hasInvalidSessionSeed(HttpSessionContextIntegrationFilter2.java:87) at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:60) 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:1610) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) 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:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:505) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370) Caused: java.lang.IllegalStateException: Error already set at org.eclipse.jetty.server.HttpChannelState.onError(HttpChannelState.java:777) at org.eclipse.jetty.server.HttpChannel.handleException(HttpChannel.java:602) at org.eclipse.jetty.server.HttpChannelOverHttp.handleException(HttpChannelOverHttp.java:489) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:537)java.lang.NullPointerException at org.jenkinsci.plugins.matrixauth.AuthorizationContainer.hasPermission(AuthorizationContainer.java:162) at hudson.security.GlobalMatrixAuthorizationStrategy$AclImpl.hasPermission(GlobalMatrixAuthorizationStrategy.java:127) at hudson.security.SidACL._hasPermission(SidACL.java:70) at hudson.security.SidACL.hasPermission(SidACL.java:52) at hudson.security.ACL.checkPermission(ACL.java:72) at hudson.security.AccessControlled.checkPermission(AccessControlled.java:47) at jenkins.model.Jenkins.getTarget(Jenkins.java:4698) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:703) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:878) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:676) at hudson.init.impl.InstallUncaughtExceptionHandler.lambda$init$0(InstallUncaughtExceptionHandler.java:32) at hudson.init.impl.InstallUncaughtExceptionHandler$$Lambda$42/27557199.reportException(Unknown Source) at org.kohsuke.stapler.compression.CompressionFilter.reportException(CompressionFilter.java:77) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:58) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) 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:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:505) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:698) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:804) at java.lang.Thread.run(Unknown Source)2019-05-21 21:07:27.123+0000 [id=127444] WARNING o.e.jetty.server.HttpChannel#handleException: /updateCenter/java.lang.NullPointerException at org.jenkinsci.plugins.matrixauth.AuthorizationContainer.hasPermission(AuthorizationContainer.java:162) at hudson.security.GlobalMatrixAuthorizationStrategy$AclImpl.hasPermission(GlobalMatrixAuthorizationStrategy.java:127) at hudson.security.SidACL._hasPermission(SidACL.java:70) at hudson.security.SidACL.hasPermission(SidACL.java:52) at hudson.security.ACL.checkPermission(ACL.java:72) at hudson.security.AccessControlled.checkPermission(AccessControlled.java:47) at jenkins.model.Jenkins.getTarget(Jenkins.java:4698) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:703) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:878) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:676) at hudson.init.impl.InstallUncaughtExceptionHandler.lambda$init$0(InstallUncaughtExceptionHandler.java:32) at hudson.init.impl.InstallUncaughtExceptionHandler$$Lambda$42/27557199.reportException(Unknown Source) at org.kohsuke.stapler.compression.CompressionFilter.reportException(CompressionFilter.java:77) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:58) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1610) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) 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:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1700) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1667) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:505) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:698) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:804) at java.lang.Thread.run(Unknown Source)
Since login was not possible, I manipulated files to revert to the previous version, and these errors were no longer happening.
I had the same problem with my Jenkins installation. We are using Active Directory with automatic discovery of the domain (i.e. Custom Domain is not checked). For our authorization setting, we are using Project-based Matrix Authorization Strategy.
In the error log, I found these new exceptions:
Since login was not possible, I manipulated files to revert to the previous version, and these errors were no longer happening.