HTTP Status 500 – Internal Server Error


Type Exception Report

Message Unable to compile class for JSP:

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

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [29] in the jsp file: [/OWL.jsp]
StringUtil cannot be resolved
26:  }
27: 
28:  String kbName = request.getParameter("kb");
29:  if (kbName == null || StringUtil.emptyString(kbName)) 
30:      KBmanager.getMgr().getPref("sumokbname");
31: 
32:  KB kb = null;


An error occurred at line: [33] in the jsp file: [/OWL.jsp]
StringUtil cannot be resolved
30:      KBmanager.getMgr().getPref("sumokbname");
31: 
32:  KB kb = null;
33:  if (!StringUtil.emptyString(kbName)) {
34:      kb = KBmanager.getMgr().getKB(kbName);
35:      if (kb != null)
36:          TaxoModel.kbName = kbName;


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:212)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:457)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:379)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:335)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:601)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
	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