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

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This exception has no message.
java.lang.NullPointerException:
at com.iplanet.am.console.settings.SettingsResolverBase.unionSettings(SettingsResolverBase.java:183)
at com.iplanet.am.console.settings.SettingsResolverBase.unionSettings(SettingsResolverBase.java:134)
at com.iplanet.am.console.settings.UnionRoleIntersectOrgSettingsResolver.unionRoleSettings(UnionRoleIntersectOrgSettingsResolver.java:100)
at com.iplanet.am.console.settings.UnionRoleIntersectOrgSettingsResolver.resolve(UnionRoleIntersectOrgSettingsResolver.java:68)
at com.iplanet.am.console.settings.UserSettings.getSetting(UserSettings.java:119)
at com.iplanet.am.console.settings.UserSettings.getSetting(UserSettings.java:90)
at com.iplanet.am.console.settings.UserSettings.canPerform(UserSettings.java:168)
at com.iplanet.am.console.base.model.AMModelBase.canPerform(AMModelBase.java:3930)
at com.iplanet.am.console.base.model.AMModelBase.canPerform(AMModelBase.java:3543)
at com.iplanet.am.console.base.AMHeaderViewBean.isHyperLinkEnabled(AMHeaderViewBean.java:251)
at com.iplanet.am.console.base.AMHeaderViewBean.beginEnableHyperNameDisplay(AMHeaderViewBean.java:230)
at sun.reflect.GeneratedMethodAccessor102.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.iplanet.jato.view.ContainerViewBase.beginChildDisplay(ContainerViewBase.java:834)
at com.iplanet.jato.taglib.ContentTag.doStartTag(ContentTag.java:94)
at org.apache.jsp.console.base.AMHeader_jsp._jspx_meth_jato_content_2(Unknown Source)
at org.apache.jsp.console.base.AMHeader_jsp._jspService(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:917)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:464)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:917)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:398)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:792)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:472)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:353)
at com.iplanet.jato.view.ViewBeanBase.forward(ViewBeanBase.java:340)
at com.iplanet.jato.view.ViewBeanBase.forwardTo(ViewBeanBase.java:261)
at com.iplanet.jato.ApplicationServletBase.dispatchRequest(ApplicationServletBase.java:981)
at com.iplanet.jato.ApplicationServletBase.processRequest(ApplicationServletBase.java:615)
at com.iplanet.jato.ApplicationServletBase.doGet(ApplicationServletBase.java:459)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:796)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:917)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:398)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:277)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:255)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:556)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:586)
at com.sun.webserver.connector.nsapi.NSAPIProcessor.service(NSAPIProcessor.java:160)

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