From 35a65e47441f61c99f6710b0c34faa5d8a78ddd7 Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Fri, 17 Nov 2023 14:37:25 +0100
Subject: [PATCH] Check for element before attempting to show spinner

Fixes CODEOCEAN-FRONTEND-57
---
 app/assets/javascripts/editor/editor.js.erb | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index 970a4696..371c2221 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -761,9 +761,13 @@ var CodeOceanEditor = {
     },
 
     showSpinner: function (initiator) {
-        $(initiator).closest('[data-bs-toggle="tooltip"]').tooltip('hide');
-        $(initiator).find('i.fa-solid, i.fa-regular').hide();
-        $(initiator).find('i.fa-spin').addClass('d-inline-block').removeClass('d-none');
+        const element = $(initiator);
+
+        if (initiator && element) {
+            $(initiator).closest('[data-bs-toggle="tooltip"]').tooltip('hide');
+            $(initiator).find('i.fa-solid, i.fa-regular').hide();
+            $(initiator).find('i.fa-spin').addClass('d-inline-block').removeClass('d-none');
+        }
     },
 
     showStatus: function (output) {