Mentioned users are not receiving notification emails from Jira
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
When using @mention to notify a user, Jira doesn't send out the notification email as expected.
The following appears in the atlassian-jira.log:
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2017-08-01 08:45:31,571 http-bio-8080-exec-123 ERROR **** 127.0.0.1 /rest/api/2/issue/XXXX-1234/comment [atlassian.event.internal.AsynchronousAbleEventDispatcher] There was an exception thrown trying to dispatch event [com.atlassian.jira.event.issue.IssueEvent@216e2a85[issue=XXXX-1234,comment=com.atlassian.jira.issue.comments.CommentImpl@aae6b128,worklog=<null>,changelog=<null>,eventTypeId=6,sendMail=true,params={eventsource=action, baseurl=http://localhost:8080/jira},subtasksUpdated=false]] from the invoker [SingleParameterMethodListenerInvoker{method=public void com.atlassian.jira.event.listeners.mention.MentionEventListener.onIssueEvent(com.atlassian.jira.event.issue.IssueEvent), listener=com.atlassian.jira.event.listeners.mention.MentionEventListener@61718e85}]
java.lang.RuntimeException: java.lang.NullPointerException
at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:50)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1$1.run(AsynchronousAbleEventDispatcher.java:48)
at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:253)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:107)
at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:160)
at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:79)
at com.atlassian.jira.event.issue.DefaultIssueEventManager.publishEvent(DefaultIssueEventManager.java:145)
at com.atlassian.jira.event.issue.DefaultIssueEventManager.publishAsRedundant(DefaultIssueEventManager.java:159)
at com.atlassian.jira.event.issue.DefaultIssueEventManager.dispatchRedundantEvent(DefaultIssueEventManager.java:87)
at com.atlassian.jira.issue.comments.DefaultCommentManager.dispatchEvent(DefaultCommentManager.java:463)
at com.atlassian.jira.issue.comments.DefaultCommentManager.dispatchIssueCommentAddedEvent(DefaultCommentManager.java:449)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:280)
at com.atlassian.jira.issue.comments.DefaultCommentManager.create(DefaultCommentManager.java:199)
at com.atlassian.jira.bc.issue.comment.DefaultCommentService$3.apply(DefaultCommentService.java:356)
at com.atlassian.jira.bc.issue.comment.DefaultCommentService$3.apply(DefaultCommentService.java:350)
at com.atlassian.fugue.Option$Some.fold(Option.java:425)
at com.atlassian.jira.bc.issue.comment.DefaultCommentService.create(DefaultCommentService.java:342) <+2> (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:134)
at com.sun.proxy.$Proxy215.create(Unknown Source) <+2> (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy2809.create(Unknown Source)
at com.atlassian.jira.rest.v2.issue.CommentResource$4.apply(CommentResource.java:377)
at com.atlassian.jira.rest.v2.issue.CommentResource$4.apply(CommentResource.java:373)
at com.atlassian.fugue.Option$Some.fold(Option.java:425)
at com.atlassian.jira.rest.v2.issue.CommentResource.addComment(CommentResource.java:365)
at com.atlassian.jira.rest.v2.issue.IssueResource.addComment(IssueResource.java:1434) <+2> (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) <+5> (DispatchProviderHelper.java:234) (DispatchProviderHelper.java:100) (DefaultMethodInvocation.java:61) (ExpandInterceptor.java:38) (DefaultMethodInvocation.java:61)
at com.atlassian.jira.rest.exception.ExceptionInterceptor.intercept(ExceptionInterceptor.java:59) <+1> (DefaultMethodInvocation.java:61)
at com.atlassian.jira.rest.v2.issue.scope.RequestScopeInterceptor.intercept(RequestScopeInterceptor.java:43) <+15> (DefaultMethodInvocation.java:61) (DispatchProviderHelper.java:132) (DispatchProviderHelper.java:230) (ResourceJavaMethodDispatcher.java:75) (HttpMethodRule.java:288) (RightHandPathRule.java:147) (ResourceClassRule.java:108) (RightHandPathRule.java:147) (RootResourceClassesRule.java:84) (WebApplicationImpl.java:1469) (WebApplicationImpl.java:1400) (WebApplicationImpl.java:1349) (WebApplicationImpl.java:1339) (WebComponent.java:416) (ServletContainer.java:537)
at com.atlassian.plugins.rest.module.RestDelegatingServletFilter$JerseyOsgiServletContainer.doFilter(RestDelegatingServletFilter.java:178) <+1> (ServletContainer.java:795)
at com.atlassian.plugins.rest.module.RestDelegatingServletFilter.doFilter(RestDelegatingServletFilter.java:73) <+16> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70) (RestServletUtilsUpdaterFilter.java:26) (RestServletUtilsUpdaterFilter.java:40) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70) (ContextFilter.java:25) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.mywork.client.filter.ServingRequestsFilter.doFilter(ServingRequestsFilter.java:37) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.plugins.cors.CorsFilter.doFilter(CorsFilter.java:65) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFixupFilter.doFilter(PrettyUrlsSiteMeshFixupFilter.java:36) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsDispatcherFilter.doFilter(PrettyUrlsDispatcherFilter.java:60) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFilter.doFilter(PrettyUrlsSiteMeshFilter.java:92) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsMatcherFilter.doFilter(PrettyUrlsMatcherFilter.java:56) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.labs.botkiller.BotKillerFilter.doFilter(BotKillerFilter.java:36) <+21> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AccessLogFilter.java:105) (AccessLogFilter.java:89) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (XsrfTokenAdditionRequestFilter.java:54) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (PageBuilderFilter.java:90) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (CommittedResponseHtmlErrorRecoveryFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+22> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (SecurityFilter.java:239) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (TrustedApplicationsFilter.java:100) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (BaseLoginFilter.java:172) (JiraLoginFilter.java:70) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70) (OAuthFilter.java:79) (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.plugins.rest.module.servlet.RestSeraphFilter.doFilter(RestSeraphFilter.java:40) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.bonfire.web.filters.BonfireP3PFilter.doFilter(BonfireP3PFilter.java:42) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+9> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractJohnsonFilter.java:71) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) <+5> (UrlRewriteFilter.java:394) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:70)
at com.atlassian.analytics.client.filter.JiraAnalyticsFilter.doFilter(JiraAnalyticsFilter.java:40)
at com.atlassian.analytics.client.filter.AbstractHttpFilter.doFilter(AbstractHttpFilter.java:32) <+3> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:70)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+45> (DelegatingPluginFilter.java:78) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ChainedFilterStepRunner.java:87) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractCachingFilter.java:33) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (AbstractEncodingFilter.java:41) (AbstractHttpFilter.java:31) (PathMatchingEncodingFilter.java:45) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (JiraStartupChecklistFilter.java:79) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (MultipartBoundaryCheckFilter.java:41) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (ChainedFilterStepRunner.java:87) (JiraFirstFilter.java:61) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (GzipFilter.java:121) (GzipFilter.java:92) (JiraGzipFilter.java:56) (ApplicationFilterChain.java:241) (ApplicationFilterChain.java:208) (StandardWrapperValve.java:220) (StandardContextValve.java:122) (AuthenticatorBase.java:501) (StandardHostValve.java:171) (ErrorReportValve.java:103) (StandardEngineValve.java:116) (AccessLogValve.java:950) (CoyoteAdapter.java:408) (AbstractHttp11Processor.java:1070) (AbstractProtocol.java:611) (JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerExceptionSolution
Remove any empty Recipient values from the Notification Scheme
Check if there is an empty string Recipient against a Notification Event on the Notification Schemes page.
Delete the empty string Recipient on the Notification Schemes page
If the issue is not resolved, refer to other causes in our documentation: User mentions are not working as expected in Jira
Updated on April 8, 2025
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