Weblogic server 9.2. I am receiving following error

I have an application running on Weblogic server 9.2. I am receiving following error. What causing this problem?. Is it the problem with my application and where?
Can any one provide the solution please…..

Error 500--Internal Server Error 
java.lang.NullPointerException
	at jsp_servlet.__powerresults._jspService(__powerresults.java:373)
	at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
	at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:528)
	at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:261)
	at jsp_servlet.__searchredirector._jspService(__searchredirector.java:102)
	at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
	at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
	at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
	at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3231)
	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:2002)
	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1908)
	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1362)
	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
	at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)

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