Version: 4.0.5 Cant add post or edit a post

I Cant add a new post or edit a post since a few days ago. I Published a post on
2024/11/14 at 11:15. Then wrote some more posts and have gone back to edit or add a new post and nothing is working. when clicking add post the page is blank The website post cannot be edited front or back end. https://eggandbacon.co.uk/

The last thing I did today was to try and edit the theme from the front page the customise the front page option, I change they way the page loads the topics on the top slider.

All plugins are up to date

Regards John