2021-10-04 17:11:10.959+0000 [id=89]	WARNING	o.e.j.s.h.ContextHandler$Context#log: Error while serving http://localhost:8080/pipeline-syntax/generateSnippet
java.lang.NullPointerException
	at org.jenkinsci.plugins.workflow.support.steps.input.InputStep$DescriptorImpl.lambda$customUninstantiate$2(InputStep.java:211)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
	at org.jenkinsci.plugins.workflow.support.steps.input.InputStep$DescriptorImpl.lambda$customUninstantiate$3(InputStep.java:218)
	at org.jenkinsci.plugins.workflow.support.steps.input.InputStep$DescriptorImpl.copyMapReplacingEntry(InputStep.java:230)
	at org.jenkinsci.plugins.workflow.support.steps.input.InputStep$DescriptorImpl.customUninstantiate(InputStep.java:207)
	at org.jenkinsci.plugins.structs.describable.DescribableModel.uninstantiate2(DescribableModel.java:721)
	at org.jenkinsci.plugins.structs.describable.DescribableModel.uninstantiate2_(DescribableModel.java:752)
	at org.jenkinsci.plugins.workflow.steps.StepDescriptor.uninstantiate(StepDescriptor.java:252)
	at org.jenkinsci.plugins.workflow.cps.Snippetizer.object2Groovy(Snippetizer.java:152)
	at org.jenkinsci.plugins.workflow.cps.Snippetizer.step2Groovy(Snippetizer.java:81)
	at org.jenkinsci.plugins.workflow.cps.Snippetizer.doGenerateSnippet(Snippetizer.java:526)
	at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)
	at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:396)
Caused: java.lang.reflect.InvocationTargetException
	at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:400)
	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:408)
	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$9.dispatch(MetaClass.java:457)
	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:694)
	at org.kohsuke.stapler.Stapler.service(Stapler.java:240)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
	at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626)
	at com.cloudbees.jenkins.ha.HAHealthCheckFilter.doFilter(HAHealthCheckFilter.java:35)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
	at com.cloudbees.jenkins.support.impl.cloudbees.UnrestrictedApiCallsMonitor$ApiMonitorFilter.doFilter(UnrestrictedApiCallsMonitor.java:124)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at com.cloudbees.devoptics.deliver.jira.ApiProxyFilter.doFilter(ApiProxyFilter.java:59)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at org.jenkinsci.plugins.ssegateway.Endpoint$SSEListenChannelFilter.doFilter(Endpoint.java:248)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at com.cloudbees.analytics.gatherer.InboundLink$1.doFilter(InboundLink.java:113)
	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 hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:111)
	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 com.cloudbees.jenkins.support.slowrequest.SlowRequestFilter.doFilter(SlowRequestFilter.java:37)
	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 com.cloudbees.opscenter.client.plugin.OfflineSecurityRealmFilter._doFilter(OfflineSecurityRealmFilter.java:95)
	at com.cloudbees.opscenter.client.plugin.OfflineSecurityRealmFilter.doFilter(OfflineSecurityRealmFilter.java:70)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at com.cloudbees.opscenter.security.ClusterSessionFilter._doFilter(ClusterSessionFilter.java:68)
	at com.cloudbees.opscenter.security.ClusterSessionFilter.doFilter(ClusterSessionFilter.java:43)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at com.smartcodeltd.jenkinsci.plugin.assetbundler.filters.LessCSS.doFilter(LessCSS.java:47)
	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 net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:239)
	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:215)
	at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:88)
	at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:121)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at com.cloudbees.analytics.gatherer.SetupWizardStepsFilter.doFilter(SetupWizardStepsFilter.java:202)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:64)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at jenkins.metrics.impl.MetricsFilter.doFilter(MetricsFilter.java:125)
	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:151)
	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:157)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:153)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:92)
	at jenkins.security.AcegiSecurityExceptionFilter.doFilter(AcegiSecurityExceptionFilter.java:52)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
	at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:105)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:101)
	at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:92)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:218)
	at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:212)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110)
	at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
	at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:62)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:97)
	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:109)
	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:168)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:51)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at jenkins.security.SuspiciousRequestFilter.doFilter(SuspiciousRequestFilter.java:36)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
	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:1624)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
	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:516)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	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:383)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036)
	at java.lang.Thread.run(Thread.java:748)