JT-18614: java.lang.NullPointerException

java.lang.NullPointerException
	at java.util.concurrent.ConcurrentHashMap.hash(Unknown Source)
	at java.util.concurrent.ConcurrentHashMap.containsKey(Unknown Source)
	at jetbrains.youtrack.mailbox.persistent.MailboxLifecycle.isRunning(MailboxLifecycle.java:32)
	at jetbrains.youtrack.mailbox.ui.MailMappingState_HtmlTemplateComponent.renderTemplate(MailMappingState_HtmlTemplateComponent.java:67)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.renderTemplate(TemplateComponent.java:470)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.render(TemplateComponent.java:387)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.getRefreshContent(TemplateComponent.java:414)
	at jetbrains.mps.webr.runtime.component.HtmlTemplate$1.generateScript(HtmlTemplate.java:33)
	at webr.framework.runtime.response.CommandResponseAction.generateScript(CommandResponseAction.java:17)
	at webr.framework.runtime.response.JsCommandResponse.doGenerateScript(JsCommandResponse.java:64)
	at webr.framework.runtime.response.JsCommandResponse.generateContent(JsCommandResponse.java:43)
	at webr.framework.runtime.response.JsCommandResponse.prebuildContent(JsCommandResponse.java:54)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.prebuildCompositeCommandsContent(TemplateComponent.java:564)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.prebuildCompositeCommandsContent(TemplateComponent.java:544)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.prebuildCompositeCommandsContent(TemplateComponent.java:544)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.prebuildCompositeCommandsContent(TemplateComponent.java:544)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.prebuildCompositeCommandsContent(TemplateComponent.java:544)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateActionController.processAjaxCommand(TemplateActionController.java:175)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateActionController.handleEventImpl(TemplateActionController.java:149)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateActionController.handleEvent(TemplateActionController.java:109)
	at jetbrains.mps.webr.runtime.requestProcessor.EventRequestProcessor.processRequest(EventRequestProcessor.java:75)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.processRequest(MainServlet.java:226)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.doGet(MainServlet.java:112)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.doPost(MainServlet.java:190)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:648)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1336)
	at jetbrains.mps.webr.runtime.filter.QueryParameterFilter.doFilter(QueryParameterFilter.java:25)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
	at org.eclipse.jetty.continuation.ContinuationFilter.doFilter(ContinuationFilter.java:137)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
	at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:82)
	at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:242)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:559)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:365)
	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)
	at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:937)
	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:998)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:856)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:627)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:51)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
	at java.lang.Thread.run(Unknown Source)