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

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java.lang.NullPointerException:
at com.bea.console.actions.security.policies.PolicyEditorPageFlow.getPolicyTreeMap(PolicyEditorPageFlow.java:994)
at com.bea.console.actions.security.policies.PolicyEditorPageFlow.begin(PolicyEditorPageFlow.java:247)
at com.bea.console.actions.webapp.policies.edit.module.EditWebAppModulePolicies.begin(EditWebAppModulePolicies.java:122)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.beehive.netui.pageflow.FlowController.invokeActionMethod(FlowController.java:812)
at org.apache.beehive.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:751)
at org.apache.beehive.netui.pageflow.FlowController.internalExecute(FlowController.java:434)
at org.apache.beehive.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:245)
at org.apache.beehive.netui.pageflow.FlowController.execute(FlowController.java:316)
at org.apache.beehive.netui.pageflow.internal.FlowControllerAction.execute(FlowControllerAction.java:48)
at org.apache.beehive.netui.pageflow.PageFlowRequestProcessor.processActionPerform(PageFlowRequestProcessor.java:1948)
at com.bea.console.internal.ConsolePageFlowRequestProcessor.processActionPerform(ConsolePageFlowRequestProcessor.java:188)
at org.apache.beehive.netui.pageflow.PageFlowRequestProcessor.processInternal(PageFlowRequestProcessor.java:590)
at org.apache.beehive.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:840)
at org.apache.beehive.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:607)
at org.apache.beehive.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:135)
at com.bea.console.internal.ConsoleActionServlet.process(ConsoleActionServlet.java:241)
at com.bea.console.internal.ConsoleActionServlet.doGet(ConsoleActionServlet.java:130)
at org.apache.beehive.netui.pageflow.PageFlowUtils.strutsLookup(PageFlowUtils.java:927)
at com.bea.portlet.adapter.scopedcontent.ScopedContentCommonSupport.executeAction(ScopedContentCommonSupport.java:571)
at com.bea.portlet.adapter.scopedcontent.ScopedContentCommonSupport.renderInternal(ScopedContentCommonSupport.java:222)
at com.bea.portlet.adapter.scopedcontent.PageFlowStubImpl.render(PageFlowStubImpl.java:127)
at com.bea.netuix.servlets.controls.content.NetuiContent.preRender(NetuiContent.java:338)
at com.bea.netuix.nf.ControlLifecycle$6.visit(ControlLifecycle.java:401)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:665)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walkRecursivePreRender(ControlTreeWalker.java:677)
at com.bea.netuix.nf.ControlTreeWalker.walk(ControlTreeWalker.java:151)
at com.bea.netuix.nf.Lifecycle.runOutbound(Lifecycle.java:206)
at com.bea.netuix.nf.Lifecycle.run(Lifecycle.java:146)
at com.bea.netuix.servlets.manager.UIServlet.runLifecycle(UIServlet.java:327)
at com.bea.netuix.servlets.manager.UIServlet.doPost(UIServlet.java:190)
at com.bea.netuix.servlets.manager.UIServlet.doGet(UIServlet.java:156)
at com.bea.netuix.servlets.manager.UIServlet.service(UIServlet.java:141)
at com.bea.netuix.servlets.manager.SingleFileServlet.service(SingleFileServlet.java:206)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.AsyncInitServlet.service(AsyncInitServlet.java:124)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)

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