I installed SilverStripe on my shared server and everything went fine, requirements met, etc.
Right after the install, I deleted the install files and tried to edit my new site. Everything works fine in the back-end except when I want to edit a page. Here's an idea of what I get :
I don't bother with .map files not loading since I looked on the SS official demo site and it fails to load to same files. So the problem seems to come with the tinymce-cms-17db2fb8cf.js file. However I can't see what's wrong with it... The file's there and permissions are OK...
The URL of this site is http://www.steveforest.space