HTTP Status 500 – Internal Server Error


Type Exception Report

Message com.hp.hpl.jena.reasoner.rulesys.Rule$ParserException: Expected '(' at start of clause, found html><html

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

Exception

javax.servlet.ServletException: com.hp.hpl.jena.reasoner.rulesys.Rule$ParserException: Expected '(' at start of clause, found html><html
At '<!DOCTYPE html><html '
	net.rhizomik.redefer.rdf2svg.RenderRDF.performTask(RenderRDF.java:201)
	net.rhizomik.redefer.rdf2svg.RenderRDF.doGet(RenderRDF.java:77)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:489)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

Root Cause

com.hp.hpl.jena.reasoner.rulesys.Rule$ParserException: Expected '(' at start of clause, found html><html
At '<!DOCTYPE html><html '
	com.hp.hpl.jena.reasoner.rulesys.Rule$Parser.parseNodeList(Rule.java:915)
	com.hp.hpl.jena.reasoner.rulesys.Rule$Parser.parseClause(Rule.java:951)
	com.hp.hpl.jena.reasoner.rulesys.Rule$Parser.doParseRule(Rule.java:994)
	com.hp.hpl.jena.reasoner.rulesys.Rule$Parser.parseRule(Rule.java:967)
	com.hp.hpl.jena.reasoner.rulesys.Rule.parseRules(Rule.java:619)
	com.hp.hpl.jena.reasoner.rulesys.Rule.rulesFromURL(Rule.java:465)
	net.rhizomik.redefer.rdf2svg.RenderRDF.runInference(RenderRDF.java:220)
	net.rhizomik.redefer.rdf2svg.RenderRDF.performTask(RenderRDF.java:132)
	net.rhizomik.redefer.rdf2svg.RenderRDF.doGet(RenderRDF.java:77)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:489)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

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


Apache Tomcat/8.5.90