HTTP Status 500 -

type Exception report

message

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

exception

org.apache.jasper.JasperException
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

root cause

java.lang.NullPointerException
	javax.faces.webapp.UIComponentTag.setupResponseWriter(UIComponentTag.java:615)
	javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:217)
	org.apache.myfaces.taglib.core.ViewTag.doStartTag(ViewTag.java:71)
	org.apache.jsp.welcomeJSF_jsp._jspx_meth_f_view_0(org.apache.jsp.welcomeJSF_jsp:96)
	org.apache.jsp.welcomeJSF_jsp._jspService(org.apache.jsp.welcomeJSF_jsp:71)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
	com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
	org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5 logs.
Apache Tomcat/5.5