JT-19678: TypeError: Cannot call method "get" of null (updateFixBuild->dropFixBuildIfNotResolved#2)

org.mozilla.javascript.EcmaError: TypeError: Cannot call method "get" of null (updateFixBuild->dropFixBuildIfNotResolved#2)
	at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)
	at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)
	at org.mozilla.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3660)
	at org.mozilla.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3679)
	at org.mozilla.javascript.ScriptRuntime.undefCallError(ScriptRuntime.java:3698)
	at org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2221)
	at org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2214)
	at org.mozilla.javascript.gen.c23._c1(updateFixBuild->dropFixBuildIfNotResolved:2)
	at org.mozilla.javascript.gen.c23.call(updateFixBuild->dropFixBuildIfNotResolved)
	at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)
	at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)
	at org.mozilla.javascript.gen.c23.call(updateFixBuild->dropFixBuildIfNotResolved)
	at org.mozilla.javascript.JavaAdapter.doCall(JavaAdapter.java:578)
	at org.mozilla.javascript.JavaAdapter.callMethod(JavaAdapter.java:553)
	at adapter1.guard(<adapter>)
	at jetbrains.youtrack.workflow.model.StatelessRule.handle(StatelessRule.java:38)
	at jetbrains.youtrack.workflow.persistent.WorkflowRuleImpl.beforeFlush(WorkflowRuleImpl.java:115)
	at jetbrains.youtrack.workflow.persistent.WorkflowRuleImpl.access$000(WorkflowRuleImpl.java:43)
	at jetbrains.youtrack.workflow.persistent.WorkflowRuleImpl$1.visit(WorkflowRuleImpl.java:153)
	at jetbrains.youtrack.workflow.persistent.WorkflowRuleImpl$1.visit(WorkflowRuleImpl.java:151)
	at jetbrains.mps.internal.collections.runtime.IVisitor.invoke(IVisitor.java:14)
	at jetbrains.mps.internal.collections.runtime.IterableUtils.visitAll(IterableUtils.java:17)
	at jetbrains.mps.internal.collections.runtime.Sequence.visitAll(Sequence.java:80)
	at jetbrains.youtrack.workflow.persistent.WorkflowRuleImpl.beforeFlush(WorkflowRuleImpl.java:151)
	at jetbrains.youtrack.workflow.ext.WorkflowIssueListener.beforeFlush(WorkflowIssueListener.java:82)
	at jetbrains.charisma.persistent.IssueImpl.executeBeforeFlushTrigger(IssueImpl.java:158)
	at com.jetbrains.teamsys.dnq.database.ConstraintsUtil.executeBeforeFlushTriggers(ConstraintsUtil.java:65)
	at com.jetbrains.teamsys.dnq.database.TransientSessionImpl.executeBeforeFlushTriggers(TransientSessionImpl.java:985)
	at com.jetbrains.teamsys.dnq.database.TransientSessionImpl.flush(TransientSessionImpl.java:1008)
	at com.jetbrains.teamsys.dnq.database.TransientSessionImpl.intermediateCommitReturnChanges(TransientSessionImpl.java:755)
	at com.jetbrains.teamsys.dnq.database.TransientSessionImpl.intermediateCommit(TransientSessionImpl.java:210)
	at jetbrains.charisma.smartui.comments.AddComment_HtmlTemplateComponent.save(AddComment_HtmlTemplateComponent.java:437)
	at jetbrains.charisma.smartui.comments.AddComment_HtmlTemplateComponent$4.handle(AddComment_HtmlTemplateComponent.java:85)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.doNewHandleEvent(TemplateComponent.java:728)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:682)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:680)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:680)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:680)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:680)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleByEventHandlers(TemplateComponent.java:680)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateComponent.newHandleEvent(TemplateComponent.java:653)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateActionController.handleEventImpl(TemplateActionController.java:112)
	at jetbrains.mps.webr.runtime.templateComponent.TemplateActionController.handleEvent(TemplateActionController.java:101)
	at jetbrains.mps.webr.runtime.requestProcessor.EventRequestProcessor.processRequest(EventRequestProcessor.java:75)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.processRequest(MainServlet.java:196)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.doGet(MainServlet.java:90)
	at jetbrains.mps.webr.runtime.servlet.MainServlet.doPost(MainServlet.java:165)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at jetbrains.mps.webr.runtime.filter.QueryParameterFilter.doFilter(QueryParameterFilter.java:25)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.eclipse.jetty.continuation.ContinuationFilter.doFilter(ContinuationFilter.java:92)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:77)
	at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:133)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
	at java.lang.Thread.run(Unknown Source)