I am trying to change the app/web server from jboss 3.2.3 with tomcat 4 to jboss 4.0.1 with tomcat 5.5 and I am getting this exception:
java.lang.NullPointerException
org.apache.jasper.runtime.TagHandlerPool.get(TagHandlerPool.java:108)
login.login_jsp._jspx_meth_html_html_0(login_jsp.java:84)
login.login_jsp._jspService(login_jsp.java:67)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
I have serched for that exception but nothing helped me.
Thank for some help. []s Alessandro.
