diff --git a/js/activity.js b/js/activity.js
index ed4a6cd6a0..ba225f0a6d 100644
--- a/js/activity.js
+++ b/js/activity.js
@@ -3142,6 +3142,9 @@ class Activity {
                     this.saveLocally();
                 }
             }
+            if (!this.stage) {
+                return;
+            }
 
             const $j = jQuery.noConflict();
             let w = 0,