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HTTP Status 500 – Internal Server Error

Type Exception Report

Message java.lang.NullPointerException

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

Exception

de.izsoz.dbclear.utils.DBClearServletException: java.lang.NullPointerException
	servlets.Browse.performTask(Browse.java:520)
	servlets.DBClearServlet.doGet(DBClearServlet.java:89)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.NullPointerException
	org.apache.xerces.dom.ParentNode.nodeListItem(Unknown Source)
	org.apache.xerces.dom.ParentNode.item(Unknown Source)
	de.izsoz.dbclear.entitymanager.Context.isHighestAlternativeLanguage(Context.java:300)
	de.izsoz.dbclear.entitymanager.Context.acceptNode(Context.java:199)
	de.izsoz.dbclear.dom.DBCDocument.importAndFilterNode(DBCDocument.java:479)
	de.izsoz.dbclear.dom.DBCDocument.importAndFilterNode(DBCDocument.java:483)
	de.izsoz.dbclear.dom.DBCDocument.importFilteredNode(DBCDocument.java:567)
	de.izsoz.dbclear.entitymanager.Facette.filter(Facette.java:164)
	de.izsoz.dbclear.entitymanager.Facette.getValues(Facette.java:498)
	de.izsoz.dbclear.query.browse.BrowseModel.fillResource(BrowseModel.java:272)
	de.izsoz.dbclear.query.browse.BrowseModel.fillResourceWithReadableProperties(BrowseModel.java:290)
	de.izsoz.dbclear.query.browse.BrowseModel.fillCategoryElement(BrowseModel.java:381)
	de.izsoz.dbclear.query.browse.BrowseModel.fillCategoryElement(BrowseModel.java:357)
	de.izsoz.dbclear.query.browse.BrowseModel.fillCategoryElement(BrowseModel.java:357)
	de.izsoz.dbclear.query.browse.BrowseModel.browseFacette(BrowseModel.java:134)
	servlets.Browse.performTask(Browse.java:499)
	servlets.DBClearServlet.doGet(DBClearServlet.java:89)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

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

Apache Tomcat/9.0.36