type Exception report
message javax.servlet.ServletException: net.ontopia.topicmaps.nav2.core.NavigatorRuntimeException: net.ontopia.topicmaps.nav2.taglibs.tolog.OutTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'xmlUri_unscoped' 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.OutTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'xmlUri_unscoped' 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.OutTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'xmlUri_unscoped' 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.OutTag : requires a variable (attribute 'var') containing a non-empty Collection, but the Collection in the variable 'xmlUri_unscoped' 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_005fout_005f9(general_005f04_jsp.java:9836) org.apache.jsp.general_005f04_jsp._jspx_meth_tolog_005fotherwise_005f2(general_005f04_jsp.java:9805) org.apache.jsp.general_005f04_jsp._jspx_meth_tolog_005fchoose_005f2(general_005f04_jsp.java:9704) org.apache.jsp.general_005f04_jsp._jspx_meth_c_005fset_005f212(general_005f04_jsp.java:9660) org.apache.jsp.general_005f04_jsp._jspService(general_005f04_jsp.java:821) 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.