Uncertain exception

[Migrated From Jforum.net]

Hi all,

When i am running my application i am getting this exception , can anyone help me.This exception occurs @ any time.

Expression templateName is undefined on line 5, column 14 in exception.html. The problematic instruction: ---------- ==> ${templateName} [on line 5, column 12 in exception.html] in include "${templateName}/message.htm" [on line 5, column 1 in exception.html] ---------- Java backtrace for programmers: ---------- freemarker.core.InvalidReferenceException: Expression templateName is undefined on line 5, column 14 in exception.html. at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124) at freemarker.core.Expression.getStringValue(Expression.java:118) at freemarker.core.Expression.getStringValue(Expression.java:93) at freemarker.core.DollarVariable.accept(DollarVariable.java:76) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.Environment.renderElementToString(Environment.java:1461) at freemarker.core.StringLiteral.getStringValue(StringLiteral.java:95) at freemarker.core.Include.accept(Include.java:110) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.MixedContent.accept(MixedContent.java:92) at freemarker.core.Environment.visit(Environment.java:196) at freemarker.core.Environment.process(Environment.java:176) at freemarker.template.Template.process(Template.java:231) at net.jforum.exceptions.ExceptionWriter.handleExceptionData(ExceptionWriter.java:108) at net.jforum.JForum.service(JForum.java:232) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312) at net.jforum.JForum.service(JForum.java:164) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at net.jforum.util.legacy.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:59) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:595)



please help me,

Thanks in advance
Regards,
amritha
[originally posted on jforum.net by a.amritha]

[Migrated From Jforum.net]

Short answer.. this is just a bug in the exception template that is trying to show you an error message... that tells you to check your application server logs for the real error...

Long Answer:

You must be using an older version of jForum... because the latest version uses a Exception.html template file in the root of the Templates directory like:

<!-- BEGIN ERROR STACK TRACE
${stackTrace}
END ERROR STACK TRACE-->
<#assign message = "<p style=\"color:red; font-weight:bold\">An error has occurred.</p><p>For detailed error information, please see the HTML source code, and contact the forum Administrator.</p><pre class=\"pre-error\"><i>" + message + "</i></pre>"/>

<#if templateName?exists && dateTimeFormat?exists>
	<#include "${templateName}/message.htm"/>
<#else>
	<html>
	<head>
	<title>Error</title>
	</head>
	<body>
	${message}
	</body>
	</html>
</#if>

Replace the contents of this file with the new template code above and a more correct error message will be displayed.
[originally posted on jforum.net by monroe]