Thank you for your fast and clear reply. I’ve been checking with my hosting provider and they told me to check with WordPress. I don’t know where this code comes from, a plugin or an intrusion in my ftp. I change the 2 JS files with mistakes following this site:
https://blog.sucuri.net/2016/01/jquery-pastebin-replacement.html.
Hopefully, it will fix the issue.
I’m going to update the theme manually.
Thanks again