Hi
I tried using PHP 8.1 with the 4.7 but register page triggers HTTP 500 and following log is created. It looks to work with 7.4
#0 forum/system/Login/Handler/OAuth2/OAuth2.php(606): IPS\_Log::log('Array\n(\n [er...', 'oauth')
#1 forum/system/Login/Handler/OAuth2/OAuth2.php(388): IPS\Login\Handler\_OAuth2->_exchangeAuthorizationCodeForAccessToken('...')
#2 forum/system/Login/Handler/OAuth2/OAuth2.php(169): IPS\Login\Handler\_OAuth2->_handleAuthorizationResponse(Object(IPS\Login))
#3 forum/applications/brilliantdiscord/sources/LoginHandler.php(403): IPS\Login\Handler\_OAuth2->authenticateButton(Object(IPS\Login))
#4 forum/system/Login/Login.php(339): IPS\brilliantdiscord\_LoginHandler->authenticateButton(Object(IPS\Login))
#5 forum/applications/core/modules/front/system/login.php(57): IPS\_Login->authenticate()
#6 forum/system/Dispatcher/Controller.php(101): IPS\core\modules\front\system\_login->manage()
#7 forum/system/Dispatcher/Dispatcher.php(153): IPS\Dispatcher\_Controller->execute()
#8 forum/index.php(13): IPS\_Dispatcher->run()
#9 {main}