SERVER ENCOUNTERED PROBLEM PROCESSING YOUR REQUEST: org.apache.jasper.JasperException: An exception occurred processing [Events/event.jsp] at line [111] 108: conference = (Conference) application.getAttribute("event_" + cid); 109: // if (conference.getStates() > 0 && conference.getStatesObject() == null) { 110: Connection con = datasource.getConnection(); 111: conference.populateFromDB(cid, con); 112: con.close(); 113: // } 114: } Stacktrace: