V3.66 multiple errors

Hello to all, someone have this problems? I'm using PHP 8.2

I getting error 500 on a popup (There was an error sending the request! Error: HTTP error! status: 500) when oppening General Setting also when saving records.

Also on a multirecord editor with file upload I'm getting Fatal error: Allowed memory size and  uber_file_get_contents(): Return value must be of type string|false.