Hi All,
 
When I refresh the browser after updating the servlet, I get the following error.  What could be the problem?
 
Thanks,
 
Hari.
 

Error: 500

Location: /webconsole/html/index.html

Internal Servlet Error:
java.lang.IllegalStateException: Can't happen - classname is null, who added this ?
	at org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:261)
	at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
	at org.apache.tomcat.core.Handler.service(Handler.java:254)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
	at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:281)
	at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
	at java.lang.Thread.run(Thread.java:484)