urgent really:)

Hi guys i am really leaving big problem with jamm. I
am using debian sarge. Tomcat5 and kaffe as java vm.
But i cannot start jamm. I am taking error messages.
It really make me tired. I dont know so much java.
Also it is a problem for me. Maybe you can help me.
Here my error messages is:

HTTP Status 500 -=20

-------------------------------------------------------------------------=
-------

type Exception report

message=20

description The server encountered an internal error
() that prevented it from fulfilling this request.

exception=20

org.apache.jasper.JasperException
	org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:372)
	org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service
(HttpServlet.java:802)
	java.lang.reflect.Method.invoke0 (Method.java)
	java.lang.reflect.Method.invoke (Method.java:255)
	org.apache.catalina.security.SecurityUtil$1.run
(SecurityUtil.java:243)
	java.security.AccessController.doPrivileged
(AccessController.java:195)
	javax.security.auth.Subject.doAsPrivileged
(Subject.java:250)
	org.apache.catalina.security.SecurityUtil.execute
(SecurityUtil.java:272)

org.apache.catalina.security.SecurityUtil.doAsPrivilege
(SecurityUtil.java:161)


root cause=20

java.lang.NullPointerException
	org.apache.struts.util.RequestUtils.computeURL
(RequestUtils.java:521)
	org.apache.struts.util.RequestUtils.computeURL
(RequestUtils.java:436)
	org.apache.struts.util.RequestUtils.computeURL
(RequestUtils.java:396)
	org.apache.struts.taglib.logic.RedirectTag.doEndTag
(RedirectTag.java:294)
	org.apache.jsp.index_jsp._jspx_meth_logic_redirect_0
(index_jsp.java:146)
	org.apache.jsp.index_jsp._jspService
(index_jsp.java:82)
	org.apache.jasper.runtime.HttpJspBase.service
(HttpJspBase.java:94)
	javax.servlet.http.HttpServlet.service
(HttpServlet.java:802)
	org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:324)
	org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:292)
	org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:236)
	javax.servlet.http.HttpServlet.service
(HttpServlet.java:802)
	java.lang.reflect.Method.invoke0 (Method.java)
	java.lang.reflect.Method.invoke (Method.java:255)
	org.apache.catalina.security.SecurityUtil$1.run
(SecurityUtil.java:243)
	java.security.AccessController.doPrivileged
(AccessController.java:195)
	javax.security.auth.Subject.doAsPrivileged
(Subject.java:250)
	org.apache.catalina.security.SecurityUtil.execute
(SecurityUtil.java:272)

org.apache.catalina.security.SecurityUtil.doAsPrivilege
(SecurityUtil.java:161)


note The full stack trace of the root cause is
available in the Apache Tomcat/5.0 logs.

Thanks everyone

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