Fatal error: Uncaught Error: Undefined constant "OAUTH2_CLIENT_ID" in C:\xampp\htdocs\files\classes\Functions.php:15911 Stack trace: #0 C:\xampp\htdocs\files\external\s.php(15): Functions::discordExecute() #1 C:\xampp\htdocs\files\classes\Functions.php(191): require_once('C:\\xampp\\htdocs...') #2 C:\xampp\htdocs\files\redirect.php(21): Functions::LoadPage('s') #3 C:\xampp\htdocs\index.php(15): require_once('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\files\classes\Functions.php on line 15911