NPE (javax.servlet.ServletException: java.lang.NullPointerException)

javax.servlet.ServletException: java.lang.NullPointerException
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:796)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
  at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:233)
  at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
  at org.kohsuke.stapler.MetaClass$11.dispatch(MetaClass.java:380)
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
  at org.kohsuke.stapler.MetaClass$11.dispatch(MetaClass.java:380)
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
  at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:233)
  at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
  at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
  at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
  at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
  at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)
  at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:59)
  at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
  at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:86)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  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: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$1.doFilter(ChainedServletFilter.java:87)
  at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
  at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
  at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
  at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
  at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)
  at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
  at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
  at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
  at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
  at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
  at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
  at org.eclipse.jetty.server.Server.handle(Server.java:499)
  at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
  at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
  at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
  at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
  at io.gatling.jenkins.ReportRenderer.doIndex(ReportRenderer.java:54)
  at sun.reflect.GeneratedMethodAccessor973.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:324)
  at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:167)
  at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:100)
  at org.kohsuke.stapler.IndexDispatcher.dispatch(IndexDispatcher.java:26)
  at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
  ... 70 more

This looks like https://github.com/gatling/gatling/issues/3069.
If so, it’s been fixed but not released yet.

Thanks for your reply dude.

Actually. I have tried running multiple Gatling simulations with same name in jenkins pipeline. I am getting only one report for the latest simulations. I am putting gatlingArchive() only once in a pipeline after run of two simulations. Could you please tell me what wrong I must be doing in that.?

We don’t support this usage. Only 1 simulation per job.

https://github.com/gatling/gatling/issues/1162

I think you guys does. Please can you check the link above. And also In the Change log section of this wiki. As an update in 1.0.3 which is contributed bye chris price.

https://wiki.jenkins-ci.org/display/JENKINS/Gatling+Plugin

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