Index: lams_monitoring/web/includes/javascript/monitorLesson.js
===================================================================
diff -u -r33482940822e346adaf78052222495d6da24907d -r02237dbe08cb55459c25c38aba82120eaa4f23a4
--- lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 33482940822e346adaf78052222495d6da24907d)
+++ lams_monitoring/web/includes/javascript/monitorLesson.js	(.../monitorLesson.js)	(revision 02237dbe08cb55459c25c38aba82120eaa4f23a4)
@@ -1819,7 +1819,10 @@
  * Tells parent document to close this Monitor dialog.
  */
 function closeMonitorLessonDialog(refresh) {
-	window.parent.closeDialog('dialogMonitorLesson' + lessonId, refresh);
+	//check method is available in order to avoid JS errors (as it's not available from integrations)
+	if (typeof window.parent.closeDialog === "function") {
+		window.parent.closeDialog('dialogMonitorLesson' + lessonId, refresh);
+	}
 }
 
 /**