Revision keeps loading

Hi, on the homepage of an Elementor website we are missing post-grids, so they dont appear on the page anymore.
When I try to load a revision from 3 month ago, it keeps spinning.
In the dev console is the message: Uncaught Error: Element type not found: ‘ha-post-grid’ at …. (several js files).

The backups are showing the same page: with empty places for the missing content.

Do you have any suggestions to fix this?

The page I need help with: [log in to see the link]