HTTP Status 500 – Internal Server Error


Type Exception Report

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

Exception

java.lang.NullPointerException
	org.apache.xalan.transformer.TransformerImpl.createSerializationHandler(TransformerImpl.java:1122)
	org.apache.xalan.transformer.TransformerImpl.createSerializationHandler(TransformerImpl.java:1060)
	org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1268)
	org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1251)
	org.greenstone.gsdl3.util.XMLTransformer.transform(XMLTransformer.java:535)
	org.greenstone.gsdl3.util.XMLTransformer.transform(XMLTransformer.java:474)
	org.greenstone.gsdl3.util.XMLTransformer$TransformErrorListener.performTransformWithPhysicalFiles(XMLTransformer.java:867)
	org.greenstone.gsdl3.util.XMLTransformer$TransformErrorListener.handleError(XMLTransformer.java:773)
	org.greenstone.gsdl3.util.XMLTransformer$TransformErrorListener.fatalError(XMLTransformer.java:715)
	org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1409)
	org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:709)
	org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1273)
	org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1251)
	org.greenstone.gsdl3.util.XMLTransformer.transform(XMLTransformer.java:307)
	org.greenstone.gsdl3.util.XMLTransformer.transform(XMLTransformer.java:225)
	org.greenstone.gsdl3.core.TransformingReceptionist.transformPage(TransformingReceptionist.java:1132)
	org.greenstone.gsdl3.core.TransformingReceptionist.postProcessPage(TransformingReceptionist.java:336)
	org.greenstone.gsdl3.core.Receptionist.process(Receptionist.java:293)
	org.greenstone.gsdl3.LibraryServlet.doGetOrPost(LibraryServlet.java:818)
	org.greenstone.gsdl3.LibraryServlet.doGet(LibraryServlet.java:847)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.greenstone.gsdl3.core.URLFilter.doFilter(URLFilter.java:493)

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


Apache Tomcat/8.5.35