Fixed a bug in the prestashop admin interface

I am facing a problem in my eshop admin environment. The platform is in prestashop, in particular an error has been generated in the Ap Hook Builder which does not allow me to make any changes to the home page of the site.
I am attaching a video so you can understand what problem I am facing.As you can see in the video, as soon as I click to save the changes I made, it ends up on a blank page and of course any change is not completed.
Thank you in advance

Regards
Othon