...and the stack trace....

  | 17:02:35,557 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
  | java.lang.NullPointerException
  |         at 
org.jbpm.webapp.tag.ProcessImageTag.extractBoxConstraint(ProcessImageTag.java:172)
  |         at 
org.jbpm.webapp.tag.ProcessImageTag.writeTable(ProcessImageTag.java:145)
  |         at 
org.jbpm.webapp.tag.ProcessImageTag.doEndTag(ProcessImageTag.java:74)
  |         at 
org.apache.jsp.task_jsp._jspx_meth_jbpm_processimage_0(org.apache.jsp.task_jsp:724)
  |         at 
org.apache.jsp.task_jsp._jspx_meth_f_view_0(org.apache.jsp.task_jsp:167)
  |         at org.apache.jsp.task_jsp._jspService(org.apache.jsp.task_jsp:111)
  |         at 
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
  |         at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
  |         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
  |         at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
  |         at 
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
  |         at 
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:55)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  |         at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  |         at 
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
  |         at 
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
  |         at 
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
  |         at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  |         at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  |         at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  |         at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  |         at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
  |         at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
  |         at 
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  |         at 
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  |         at java.lang.Thread.run(Thread.java:595)
  | 17:02:35,604 ERROR [[FacesServlet]] Servlet.service() for servlet 
FacesServlet threw exception
  | javax.faces.FacesException: org.apache.jasper.JasperException
  |         at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:425)
  |         at 
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
  |         at 
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:55)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
  |         at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
  |         at 
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
  |         at 
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
  |         at 
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
  |         at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
  |         at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
  |         at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
  |         at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
  |         at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
  |         at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
  |         at 
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
  |         at 
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
  |         at java.lang.Thread.run(Thread.java:595)
  | Caused by: org.apache.jasper.JasperException
  |         at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
  |         at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
  |         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
  |         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
  |         at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
  |         at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
  |         at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
  |         ... 31 more
  | 

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