Magento Firewall Extension Issue

I have a problem with my Openmage RC-2 system and need help getting it to work. There is a problem with the firewall extension; currently, the problem is that the no warning sign appears, the admin panel is blank, and the formkey also needs to be refreshed (See Image) before I can get in. It has to do with a file called firewall.php. It may be caused by upgrading to PHP 8.2, because the application was originally php7.4.