Tried with incognito window, same issue.
One failing URL is the admin login page (which I prefer not disclosing), main page's carrousel is failing too.
According to console there many errors regarding JQUERY:
[EDIT]
Used Beyond Compare to compare content of those failing .js files... the ones on server side hace corrupted chars! Seems like FileZilla had some transfer issues I wasn't aware of... I'm re-uploading those files... but how am I gonna do to check integrity of thousands of files!
Installing a fresh Prestashop and importing the data is not an option, I have modified certain parts of the code and made the mistake of not tracking on which files...
.png.022b5452a8f28f552bc9430097a16da2.png)