Index: lams_admin/web/cleanupPreviewLessons.jsp
===================================================================
diff -u -r37bb2ae017713b44cdfd6a55cfceca28c3efab02 -r3abaa537dbbe6a541d3bac6cb5341e58b768104a
--- lams_admin/web/cleanupPreviewLessons.jsp	(.../cleanupPreviewLessons.jsp)	(revision 37bb2ae017713b44cdfd6a55cfceca28c3efab02)
+++ lams_admin/web/cleanupPreviewLessons.jsp	(.../cleanupPreviewLessons.jsp)	(revision 3abaa537dbbe6a541d3bac6cb5341e58b768104a)
@@ -42,7 +42,7 @@
 				return;
 			}
 			$.ajax({
-				'url'     : '<lams:WebAppURL />cleanupPreviewLessons/delete.do',
+				'url'     : '<lams:WebAppURL />cleanupPreviewLessons/delete.do?<csrf:token/>',
 				'data'    : {
 					'limit'  : 5
 				},