core.js not loading on content pages in 1.7.7.3

[RichyVOC]

Hello,
All my content pages are not loading completely even though product pages, category work, payement page function correctly. The content pages get stuck on the preloader. I see that part of the page loads correctly in the background (header elements) but are not visible because they are behind the preloader white background. I've pinpointed that the javascript core.js file is not loading. The core.js loads jquery and thus there are many jquery errors. 

I'm not getting any 400 errors for missing files.
The server is PHP 7.2 (7.3 slows down the site).

The website is cannelle-orange.fr.
Thanks for any and all help.
Screen captures of a product page and a content page