HTTP Status 500 – Internal Server Error


Type Exception Report

Message java.lang.NullPointerException: Cannot invoke "weboncampus.blayer.object.ObjGrupoInvestigacao.getName()" because the return value of "weboncampus.service.researchgroups.DTOGroupMembers.getObjResearchGroup()" is null

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

Exception

javax.servlet.ServletException: java.lang.NullPointerException: Cannot invoke "weboncampus.blayer.object.ObjGrupoInvestigacao.getName()" because the return value of "weboncampus.service.researchgroups.DTOGroupMembers.getObjResearchGroup()" is null
	org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1205)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:423)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)

Root Cause

java.lang.NullPointerException: Cannot invoke "weboncampus.blayer.object.ObjGrupoInvestigacao.getName()" because the return value of "weboncampus.service.researchgroups.DTOGroupMembers.getObjResearchGroup()" is null
	weboncampus.action.researchgroups.ActionGetPPResearchgroupMembers.executeAction(ActionGetPPResearchgroupMembers.java:71)
	weboncampus.action.ActionWOC.execute(ActionWOC.java:228)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1205)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:423)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.displaytag.filter.ResponseOverrideFilter.doFilter(ResponseOverrideFilter.java:125)

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


Apache Tomcat/9.0.64