The firebase Hosting index.html file send a message “loaded” to thunkable:
From My Index.HTML:
ThunkableWebviewerExtension.postMessage('loaded');
The "loaded" message is send to thunkable .
Thunkable wait for the message :

the message send to thunkable from the firebase Hosting HTML script is :
ThunkableWebviewerExtension.postMessage(‘loaded’);
thunkable does not see the message anymore :
The URL from the firebase Hosting seams to work !!!
Is there any one who has a idee what going one ?
Is there any log in firebase Hosting to check if there are any error ?