Migration to new hosting leads to Fatal Error

[ottosuperstudio]

Hello,
the website https://www.parcoadamello.it is showing a Fatal Error, like the pone in this link https://docs.joomla.org/J4.x:FatalError.
I've tried to download the FPA file in the root directory, but that is not working too.
Let me explain first, the website was on a 7.3 PHP version, therefore our collaborator decided to move the website to a new hosting that provides a higher PHP version so that Joomla can work fine on the website.

The migration happend yesterday, but today the website started to show a Fatal Error.
I wanted to restore the backup of the website that I saved using Akeeba Backups but that doesn't work too.

For the moment we redirected to a website on our domain pre.ottosuperstudio, so people can still see the website.

Would you be able to help me? Thank you in advance.

[ceford]

Use a text editor to edit configuration.php in the site root. Set $debug to true and $error_reporting to 'maximum'. Then trigger the error.

Your error should include a stack trace. Take a screenshot of the stack trace (not the code) and paste it here,

[Webdongle]

Another option is you can use the .htaccess to change the php version so you can access admin to turn on debug.

What error are you getting with the fpa?