Issue

• Whenever we attempt to access a web page from our search indexer here, the user gets the error:

Internal Server Error

The server experienced a problem which prevented your request from being filled out. It may not be possible to execute this action at this time.

Please help us correct this problem by contacting us with details of how you received this message.

• Along with this the traceback email is :

The following exception occurred while executing this request:
GET /rhn/help/satellite/en-US/s1-installation-app-server-installer.jsp

Date:4/4/13 10:03:47 AM MDT
Headers:
host: <satellite server>
user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0
accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
accept-language: en-gb,en;q=0.5
accept-encoding: gzip, deflate
referer: <search service>
cookie: <cookie info>
connection: keep-alive

Request:
Local Name = <satellite server>
Server Name = <satellite server>
Requested Session Id came from Cookie
Requested Session Valid = true
Session = org.apache.catalina.session.StandardSessionFacade@44954495[session=StandardSession[4581CEE0346590A20F197726888FED76]]
Protocol = https
Request Locale = en_US
Request Character Encoding = UTF-8
Attribute Names = rhnActiveLang, javax.servlet.jsp.jstl.fmt.timeZone.request, javax.servlet.request.key_size, __sitemesh__filterapplied, javax.servlet.request.ssl_session, javax.servlet.request.cipher_suite, org.apache.struts.action.MESSAGE, session, org.apache.struts.action.mapping.instance, requestedUri, org.apache.struts.action.MODULE,


User Information:
No User logged in.

Exception:
javax.servlet.ServletException
        at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:237)
        at com.redhat.rhn.frontend.struts.RhnRequestProcessor.process(RhnRequestProcessor.java:99)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:469)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:403)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
        at com.redhat.rhn.frontend.servlets.AuthFilter.doFilter(AuthFilter.java:139)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:142)
        at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:58)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.redhat.rhn.frontend.servlets.LocalizedEnvironmentFilter.doFilter(LocalizedEnvironmentFilter.java:67)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.redhat.rhn.frontend.servlets.EnvironmentFilter.doFilter(EnvironmentFilter.java:108)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.redhat.rhn.frontend.servlets.SessionFilter.doFilter(SessionFilter.java:55)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.redhat.rhn.frontend.servlets.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:97)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
        at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:736)
Caused by: java.lang.NullPointerException
        at com.redhat.rhn.frontend.action.YourRhnAction.getDisplayPanes(YourRhnAction.java:146)
        at com.redhat.rhn.frontend.action.YourRhnAction.execute(YourRhnAction.java:107)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
        ... 44 more

• Why do we get this error and how do we fix it?