Type Exception Report
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
java.lang.NullPointerException edu.cornell.mannlib.vitro.webapp.visualization.coauthorship.CoAuthorshipQueryRunner.getQueryResultAndCache(CoAuthorshipQueryRunner.java:511) edu.cornell.mannlib.vitro.webapp.visualization.coauthorship.CoAuthorshipQueryRunner.getQueryResult(CoAuthorshipQueryRunner.java:459) edu.cornell.mannlib.vitro.webapp.visualization.coauthorship.CoAuthorshipRequestHandler.generateDataVisualization(CoAuthorshipRequestHandler.java:71) edu.cornell.mannlib.vitro.webapp.controller.visualization.DataVisualizationController.renderVisualization(DataVisualizationController.java:129) edu.cornell.mannlib.vitro.webapp.controller.visualization.DataVisualizationController.doGet(DataVisualizationController.java:74) javax.servlet.http.HttpServlet.service(HttpServlet.java:635) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) edu.cornell.mannlib.vitro.webapp.controller.VitroHttpServlet.service(VitroHttpServlet.java:71) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) edu.cornell.mannlib.vitro.webapp.filters.PageRoutingFilter.doNonDisplayPage(PageRoutingFilter.java:108) edu.cornell.mannlib.vitro.webapp.filters.PageRoutingFilter.doFilter(PageRoutingFilter.java:99) edu.cornell.mannlib.vitro.webapp.filters.ClickjackFilter.doFilter(ClickjackFilter.java:31) edu.cornell.mannlib.vitro.webapp.filters.RequestModelsPrep.doFilter(RequestModelsPrep.java:56) edu.cornell.mannlib.vitro.webapp.filters.URLRewriterFilter.doFilter(URLRewriterFilter.java:38) edu.cornell.mannlib.vitro.webapp.filters.JSessionStripFilter.doFilter(JSessionStripFilter.java:61) edu.cornell.mannlib.vitro.webapp.filters.CachingResponseFilter.produceBasicResponse(CachingResponseFilter.java:319) edu.cornell.mannlib.vitro.webapp.filters.CachingResponseFilter.doFilter(CachingResponseFilter.java:118) edu.cornell.mannlib.vitro.webapp.i18n.selection.LocaleSelectionFilter.doFilter(LocaleSelectionFilter.java:62) edu.cornell.mannlib.vitro.webapp.filters.CharsetEncodingFilter.doFilter(CharsetEncodingFilter.java:34) edu.cornell.mannlib.vitro.webapp.filters.SessionTimeoutLimitingFilter.doFilter(SessionTimeoutLimitingFilter.java:39) edu.cornell.mannlib.vitro.webapp.filters.StartupStatusDisplayFilter.doFilter(StartupStatusDisplayFilter.java:64)
Note The full stack trace of the root cause is available in the server logs.