JSP Error in Webshpre Studio???

[Anjali Sen]

I got this errors in follwling lines..in websphere studio 3.5
In JSP:
#1:
<%--METADATA type="DynamicData" startspan
<TABLE width="300" dynamicelement innerloopproperty="accountListData.accountList()" innerloopdirection="vertical" innerloopstartindex="1" innerloopendindex="1" dynamicbgcolor1="#009999" dynamicbgcolor2="#008080" innerlooprangesize="13">
<CAPTION><B>Customer #:<WSPX ROPERTY property="accountListData.input_cust_num"></B></CAPTION>
<TBODY>
<TR bgcolor="#660000">
<TH>Account Number</TH>
<TH>Current Balance</TH>
</TR>
<TR>
<TD><A hrefproperty="input_acct_num=$(accountListData.accountList[].acct_num)" dynamicelement href="/servlet/servlets.WBTxnActivity"><WSPX ROPERTY property="accountListData.accountList[].acct_num"></A></TD>
<TD><WSPX ROPERTY property="accountListData.accountList[].balance"></TD>
</TR>
<TR>
<TD align="right"><B>Total:</B></TD>
<TD><B><WSPX ROPERTY property="accountListData.totalBalance"></B></TD>
</TR>
</TBODY>
</TABLE>
--%><%

#2
<%--METADATA type="DynamicData" endspan--%>

Browser o/p:
Error 500
An error has occured while processing request:http://localhost:8080/servlet/servlets.WBAccountActivity
Message:com.ibm.servlet.engine.webapp.UncaughtServletException: Server caught unhandled exception from servlet [jsp]
Target Servlet: servlets.WBAccountActivity
StackTrace:
--------------------------------------------------------------------------------
Root Error-1: com.ibm.servlet.engine.webapp.UncaughtServletException: Server caught unhandled exception from servlet [jsp]
com.ibm.servlet.engine.webapp.WebAppErrorReport: com.ibm.servlet.engine.webapp.UncaughtServletException: Server caught unhandled exception from servlet [jsp] java.lang.Throwable(java.lang.String) java.lang.Exception(java.lang.String) javax.servlet.ServletException(java.lang.String) com.ibm.websphere.servlet.error.ServletErrorReport(java.lang.String) com.ibm.servlet.engine.webapp.WebAppErrorReport(java.lang.String) void com.ibm.servlet.engine.webapp.WebAppDispatcherResponse.sendError(int, java.lang.String) void com.ibm.servlet.PageListServlet.handleError(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object) void servlets.WBAccountActivity.performTask(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) void servlets.WBAccountActivity.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.webapp.StrictServletInstance.doService(javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.webapp.IdleServletState.service(com.ibm.servlet.engine.webapp.StrictLifecycleServlet, javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.webapp.ServletInstance.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse, com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(com.ibm.servlet.engine.webapp.ServletInstanceReference, javax.servlet.ServletRequest, javax.servlet.ServletResponse, com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(javax.servlet.ServletRequest, javax.servlet.ServletResponse, com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(com.ibm.servlet.engine.webapp.WebAppRequest, com.ibm.servlet.engine.webapp.WebAppResponse, boolean) void com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(javax.servlet.ServletRequest, javax.servlet.ServletResponse, boolean) void com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(javax.servlet.ServletRequest, javax.servlet.ServletResponse) void com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(java.lang.Object) void com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(java.lang.Object) void com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(java.lang.String, com.ibm.servlet.engine.srp.ISRPConnection) void com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(com.ibm.servlet.engine.oselistener.api.IOSEConnection) void com.ibm.servlet.engine.http_transport.HttpTransportHandler.handleConnection(java.net.Socket) void com.ibm.servlet.engine.http_transport.HttpTransportHandler.run() void java.lang.Thread.run()

what is the problem and how to solve this?/
- Anjali