deployed process diagram is not getting displayed in explorer

[penusila611621]

For some of the deployed processes, explorer is not displaying process diagram & also process instance diagram for that process. Have noticed following error stack trace in server console when I click the process name under deployed processes tab.


15:13:30,674 INFO  [org.restlet.Component.LogService] (http-/0.0.0.0:8080-17) 2014-09-19   15:13:30   127.0.0.1   -   127.0.0.1   8080   GET   /activiti-explorer/service/process-definition/LoanApprovalPOC:19:89395/diagram-layout   callback=jQuery17104349532149017852_1411119810612&_=1411119810648   200   153   0   13   http://localhost:8080   Mozilla/5.0 (Windows NT 6.2; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0   http://localhost:8080/activiti-explorer/diagram-viewer/index.html?processDefinitionId=LoanApprovalPO...
15:13:36,383 INFO  [org.restlet.Component.LogService] (http-/0.0.0.0:8080-17) 2014-09-19   15:13:36   127.0.0.1   -   127.0.0.1   8080   GET   /activiti-explorer/service/process-definition/RemoveProcess:5:43411/diagram-layout   callback=jQuery17109248014485643329_1411119816291&_=1411119816347   200   2973   0   10   http://localhost:8080   Mozilla/5.0 (Windows NT 6.2; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0   http://localhost:8080/activiti-explorer/diagram-viewer/index.html?processDefinitionId=RemoveProcess:...
15:13:36,778 INFO  [org.restlet.Component.LogService] (http-/0.0.0.0:8080-17) 2014-09-19   15:13:36   127.0.0.1   -   127.0.0.1   8080   GET   /activiti-explorer/service/process-instance/43412/highlights   callback=jQuery17109248014485643329_1411119816292&_=1411119816603   200   444   0   21   http://localhost:8080   Mozilla/5.0 (Windows NT 6.2; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0   http://localhost:8080/activiti-explorer/diagram-viewer/index.html?processDefinitionId=RemoveProcess:...
15:13:37,145 WARNING [org.restlet.Component.ExplorerRestApplication] (http-/0.0.0.0:8080-17) Exception or error caught in server resource: Internal Server Error (500) - The server encountered an unexpected condition which prevented it from fulfilling the request
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:517) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.ServerResource.get(ServerResource.java:707) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:589) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.ServerResource.doNegotiatedHandle(ServerResource.java:649) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.ServerResource.doConditionalHandle(ServerResource.java:348) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.ServerResource.handle(ServerResource.java:952) [org.restlet-2.1.4.jar:]
   at org.restlet.resource.Finder.handle(Finder.java:246) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.doHandle(Router.java:431) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.handle(Router.java:648) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:155) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.CompositeHelper.handle(CompositeHelper.java:211) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.application.ApplicationHelper.handle(ApplicationHelper.java:84) [org.restlet-2.1.4.jar:]
   at org.restlet.Application.handle(Application.java:381) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.doHandle(Router.java:431) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.handle(Router.java:648) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.doHandle(Router.java:431) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Router.handle(Router.java:648) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.doHandle(Filter.java:159) [org.restlet-2.1.4.jar:]
   at org.restlet.routing.Filter.handle(Filter.java:206) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.CompositeHelper.handle(CompositeHelper.java:211) [org.restlet-2.1.4.jar:]
   at org.restlet.Component.handle(Component.java:392) [org.restlet-2.1.4.jar:]
   at org.restlet.Server.handle(Server.java:516) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.ServerHelper.handle(ServerHelper.java:72) [org.restlet-2.1.4.jar:]
   at org.restlet.engine.adapter.HttpServerHelper.handle(HttpServerHelper.java:152) [org.restlet-2.1.4.jar:]
   at org.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:1089) [org.restlet.ext.servlet-2.1.4.jar:]
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.activiti.explorer.filter.ExplorerFilter.doFilter(ExplorerFilter.java:44) [activiti-explorer-5.15.1.jar:5.15.1]
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:920) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
   at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51]
Caused by: java.lang.NullPointerException
   at org.activiti.rest.diagram.services.ProcessDefinitionDiagramLayoutResource.getActivity(ProcessDefinitionDiagramLayoutResource.java:440) [activiti-diagram-rest-5.15.1.jar:5.15.1]
   at org.activiti.rest.diagram.services.ProcessDefinitionDiagramLayoutResource.getDiagram(ProcessDefinitionDiagramLayoutResource.java:203) [activiti-diagram-rest-5.15.1.jar:5.15.1]
   at sun.reflect.GeneratedMethodAccessor893.invoke(Unknown Source) [:1.7.0_51]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_51]
   at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_51]
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:506) [org.restlet-2.1.4.jar:]

[martin_grofcik]

Could you post process definition.

Regards
Martin

[haider01]

Could you elaborate on your problem: what are you trying to do? What is failing?