Index: lams_tool_assessment/web/pages/monitoring/statistic.jsp
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_assessment/web/pages/monitoring/statistic.jsp,v
diff -u -r1.7 -r1.8
--- lams_tool_assessment/web/pages/monitoring/statistic.jsp	20 Apr 2016 09:46:55 -0000	1.7
+++ lams_tool_assessment/web/pages/monitoring/statistic.jsp	14 Jun 2016 13:23:31 -0000	1.8
@@ -21,6 +21,9 @@
 					if (json.success == "true") {
 						alert("<fmt:message key='label.tool.output.has.been.changed'/>");
 					}
+				},
+				error: function (xhr, ajaxOptions, thrownError) {
+					alert("<fmt:message key='label.operation.failed'/>");
 				}
 			});
 		});