java.lang.NullPointerException: This exception has no message.

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Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

Solutions on the web

via Atlassian JIRA by David Currie [Atlassian], 1 year ago
This exception has no message.
via Atlassian JIRA by David Currie [Atlassian], 1 year ago
This exception has no message.
via JIRA by Sangho Shin, 1 year ago
This exception has no message.
via GitHub by kgoderis
, 2 years ago
This exception has no message.
java.lang.NullPointerException:
at com.atlassian.jira.notification.NotificationRecipient.(NotificationRecipient.java:36)
at com.atlassian.jira.notification.type.UserToRecipient.apply(UserToRecipient.java:21)
at com.atlassian.jira.notification.type.UserToRecipient.apply(UserToRecipient.java:14)
at java.util.AbstractList$Itr.next(AbstractList.java:345)
at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
at com.atlassian.jira.notification.DefaultNotificationSchemeManager.getRecipients(DefaultNotificationSchemeManager.java:279)
at com.atlassian.jira.event.listeners.mail.MailListener.createMailItems(MailListener.java:122)
at com.atlassian.jira.event.listeners.mail.MailListener.sendNotification(MailListener.java:87)
at com.atlassian.jira.event.listeners.mail.MailListener.issueCommented(MailListener.java:188)
at com.atlassian.jira.event.issue.AbstractIssueEventListener.workflowEvent(AbstractIssueEventListener.java:106)
at com.atlassian.jira.event.issue.IssueEventListenerHandler$IssueEventInvoker.invoke(IssueEventListenerHandler.java:49)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$2.run(AsynchronousAbleEventDispatcher.java:60)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1.execute(AsynchronousAbleEventDispatcher.java:28)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:56)
at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:151)
at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:70)
at sun.reflect.GeneratedMethodAccessor43.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.atlassian.multitenant.impl.MultiTenantComponentFactoryImpl$AbstractMultiTenantAwareInvocationHandler.invokeInternal(MultiTenantComponentFactoryImpl.java:181)
at com.atlassian.multitenant.impl.MultiTenantComponentFactoryImpl$MultiTenantAwareInvocationHandler.invoke(MultiTenantComponentFactoryImpl.java:211)
at undefined.$Proxy5.publish(Unknown Source)
at com.atlassian.multitenant.event.DefaultPeeringEventPublisherManager.publish(DefaultPeeringEventPublisherManager.java:17)
at com.atlassian.multitenant.event.PeeringEventPublisher.publish(PeeringEventPublisher.java:23)
at com.atlassian.jira.event.issue.IssueEventDispatcher.dispatchEvent(IssueEventDispatcher.java:254)
at com.atlassian.jira.event.issue.IssueEventDispatcher.dispatchEvent(IssueEventDispatcher.java:176)
at com.atlassian.jira.web.action.issue.AddComment.alertSystemOfComment(AddComment.java:144)
at com.atlassian.jira.web.action.issue.AddComment.doExecute(AddComment.java:109)
at webwork.action.ActionSupport.execute(ActionSupport.java:165)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:76)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)
at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)
at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:16)
at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:35)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:205)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:143)
at com.atlassian.jira.web.dispatcher.JiraWebworkActionDispatcher.service(JiraWebworkActionDispatcher.java:152)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

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