Avia Layout Builder Not Loading in WordPress Dashboard

I am encountering a significant issue with the Avia Layout Builder on my website.
When I try to edit a page or post, the Avia Builder does not load at all — the editing area remains completely blank, with no elements or options visible.

Here are the details of my situation:
WordPress version: 6.8
Enfold theme version: 5.6.9
PHP version: 8.1.32
Website URL: https://6et7.fr/
Hosting provider: OVH

What I have already tried:
Deactivated all plugins except Enfold, and the problem persisted.
Cleared all caches (WordPress cache, browser cache, server cache if applicable).
Checked for JavaScript errors in the browser console (I can provide error logs if needed).
Re-installed the Enfold theme with the latest version.
Confirmed that the server meets the theme requirements (memory limit, PHP version, etc.).

Symptoms observed:
Avia Layout Builder does not display any elements when opening a page or post.
No loading spinner or error message visible in the WordPress dashboard.

Additional Information:
The issue started occurring two weeks ago.
No new plugins or major updates were installed immediately before the problem appeared.
I am ready to provide admin credentials privately if you need to access the dashboard for further investigation.

I would appreciate your support and any troubleshooting guidance you can offer to help resolve this as soon as possible.
Thank you very much in advance for your assistance.