HTTP Status 500 – Internal Server Error


Type Exception Report

Message An exception occurred processing JSP page [/TreeView.jsp] at line [99]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: An exception occurred processing JSP page [/TreeView.jsp] at line [99]

96: <table border=0 width='100%' height='100%'>
97:     <tr>
98:         <td height='100%' valign=top>
99:             <% out.print(TaxoModel.toHTML(kbHref)); %><p>
100:         </td>
101:         <td valign="top" width="1" BGCOLOR='#A8BACF'>
102:           <IMG SRC='pixmaps/1pixel.gif' width=1 border=0>


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:588)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:481)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

Root Cause

java.lang.NullPointerException
	com.articulate.sigma.TaxoNode.toHTML(TaxoNode.java:40)
	com.articulate.sigma.TaxoModel.toHTML(TaxoModel.java:203)
	org.apache.jsp.TreeView_jsp._jspService(TreeView_jsp.java:916)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/8.5.23