http://eposta.superonline.com/servlet/Login HTTP Status 500 - type Exception report message description The server encountered an internal error that prevented it from fulfilling this request. exception java. lang. NullPointerException at LoginServlet. lookUpLdap(LoginServlet. java:215) at LoginServlet. doPost(LoginServlet. java:28) at javax. servlet. http. HttpServlet. service(HttpServlet. java:760) at javax. servlet. http. HttpServlet. service(HttpServlet. java:853) at org. apache. catalina. core. ApplicationFilterChain. internalDoFilter(ApplicationFilterChain. java:247) at org. apache. catalina. core. ApplicationFilterChain. access$000(ApplicationFilterChain. java:98) at org. apache. catalina. core. ApplicationFilterChain$1. run(ApplicationFilterChain. java:176) at java. security. AccessController. doPrivileged at org. apache. catalina. core. ApplicationFilterChain. doFilter(ApplicationFilterChain. java:172) at org. apache. catalina. core. StandardWrapperValve. invoke(StandardWrapperValve. java:260) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:643) at org. apache. catalina. core. StandardPipeline. invoke(StandardPipeline. java:480) at org. apache. catalina. core. ContainerBase. invoke(ContainerBase. java:995) at org. apache. catalina. core. StandardContextValve. invoke(StandardContextValve. java:191) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:643) at org. apache. catalina. core. StandardPipeline. invoke(StandardPipeline. java:480) at org. apache. catalina. core. ContainerBase. invoke(ContainerBase. java:995) at org. apache. catalina. core. StandardContext. invoke(StandardContext. java:2396) at org. apache. catalina. core. StandardHostValve. invoke(StandardHostValve. java:180) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:643) at org. apache. catalina. valves. ErrorDispatcherValve. invoke(ErrorDispatcherValve. java:170) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:641) at org. apache. catalina. valves. ErrorReportValve. invoke(ErrorReportValve. java:172) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:641) at org. apache. catalina. core. StandardPipeline. invoke(StandardPipeline. java:480) at org. apache. catalina. core. ContainerBase. invoke(ContainerBase. java:995) at org. apache. catalina. core. StandardEngineValve. invoke(StandardEngineValve. java:174) at org. apache. catalina. core. StandardPipeline$StandardPipelineValveContext. invokeNext(StandardPipeline. java:643) at org. apache. catalina. core. StandardPipeline. invoke(StandardPipeline. java:480) at org. apache. catalina. core. ContainerBase. invoke(ContainerBase. java:995) at org. apache. coyote. tomcat4. CoyoteAdapter. service(CoyoteAdapter. java:223) at org. apache. coyote. http11. Http11Processor. process(Http11Processor. java:405) at org. apache. coyote. http11. Http11Protocol$Http11ConnectionHandler. processConnection(Http11Protocol. java:380) at org. apache. tomcat. util. net. TcpWorkerThread. runIt(PoolTcpEndpoint. java:508) at org. apache. tomcat. util. threads. ThreadPool$ControlRunnable. run(ThreadPool. java:533) at java. lang. Thread. run(Thread. java:479) Apache Tomcat/4.1.12 gUn DOgmADaN nELeR DoGaRR!!!