From f786f30d3a7cba096e8ff366e03b3eb64008290c Mon Sep 17 00:00:00 2001
From: Florent <florent.git@zeteo.me>
Date: Wed, 10 Jul 2024 14:11:43 +0200
Subject: [PATCH] Fix JS error on document access denied page

---
 dockerfiles/grist/ressources/dinum-custom.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dockerfiles/grist/ressources/dinum-custom.js b/dockerfiles/grist/ressources/dinum-custom.js
index 77fc16f..2286e77 100644
--- a/dockerfiles/grist/ressources/dinum-custom.js
+++ b/dockerfiles/grist/ressources/dinum-custom.js
@@ -133,10 +133,13 @@
 
 window.addEventListener('load', async (event) => {
   await waitForElm('body.interface-full');
-  // gristApp.topAppModel.appObs is not populated at that point, listen for the observer to their first change
-  
+  const appObs = gristApp.topAppModel && gristApp.topAppModel.appObs;
+  if (!appObs) {
+    return;
+  }
+  // appObs is not populated at that point, listen for the observer to their first change
   let listener; 
-  listener = gristApp.topAppModel.appObs.addListener( async (appObs) => {
+  listener = appObs.addListener( async (appObs) => {
     // Gauffre must be displayed only in home pages
     if (appObs.pageType.get() !== "home"){
       return 1;