HTTP Status 500 - javax.servlet.ServletException: net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.SymbolicIdTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'id' is empty. It is possible to get a fallback value by setting the 'fallback' attribute.


type Exception report

message javax.servlet.ServletException: net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.SymbolicIdTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'id' is empty. It is possible to get a fallback value by setting the 'fallback' attribute.

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: javax.servlet.ServletException: net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.SymbolicIdTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'id' is empty. It is possible to get a fallback value by setting the 'fallback' attribute.

	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:412)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

root cause

javax.servlet.ServletException: net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.SymbolicIdTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'id' is empty. It is possible to get a fallback value by setting the 'fallback' attribute.

	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
	org.apache.jsp.general_005f04_jsp._jspService(general_005f04_jsp.java:1379)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

root cause

net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.SymbolicIdTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'id' is empty. It is possible to get a fallback value by setting the 'fallback' attribute.

	net.ontopia.topicmaps.nav2.taglibs.tolog.BaseOutputProducingTag.generateOutputObject(BaseOutputProducingTag.java:140)
	net.ontopia.topicmaps.nav2.taglibs.tolog.BaseOutputProducingTag.doStartTag(BaseOutputProducingTag.java:75)
	org.apache.jsp.general_005f04_jsp._jspx_meth_tolog_005fid_005f0(general_005f04_jsp.java:6876)
	org.apache.jsp.general_005f04_jsp._jspx_meth_c_005fset_005f190(general_005f04_jsp.java:6847)
	org.apache.jsp.general_005f04_jsp._jspService(general_005f04_jsp.java:333)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.37 logs.


Apache Tomcat/6.0.37