diff --git a/static/index.html b/static/index.html
index 8b3ac2c..cff3caa 100644
--- a/static/index.html
+++ b/static/index.html
@@ -232,7 +232,15 @@
             <a id="dialog_cancel" class="button">Cancel</a>
         </footer>
     </div>
-  
+    <script>
+        window.onerror = function(message, source, lineno, colno) {
+            var msg = 'Error: \n';
+            msg += source + '\n';
+            msg += lineno+':' + colno + '\n';
+            msg += message + '\n';
+            alert(msg);
+        }
+    </script>
     <script src="js/jquery-3.5.1.min.js"></script>
     <script src="js/compressor.min.js"></script>
     <script src="js/actions.js"></script>