From c18aadaf6175cd36af1112d246ba68fcdd90995f Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Fri, 17 Nov 2023 14:37:51 +0100
Subject: [PATCH] Don't throw an exception without turtle canvas

Fixes CODEOCEAN-FRONTEND-59
---
 app/assets/javascripts/editor/turtle.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/assets/javascripts/editor/turtle.js b/app/assets/javascripts/editor/turtle.js
index 4ffff77f..b47773aa 100644
--- a/app/assets/javascripts/editor/turtle.js
+++ b/app/assets/javascripts/editor/turtle.js
@@ -45,7 +45,7 @@ CodeOceanEditorTurtle = {
 
   hideCanvas: function () {
     const turtlediv = $('#turtlediv');
-    if (turtlediv.isPresent() && !turtlediv.hasClass('d-none')) {
+    if (turtlediv && turtlediv.isPresent() && !turtlediv.hasClass('d-none')) {
       turtlediv.addClass('d-none');
     }
   }