Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\security-bundle\DependencyInjection\SecurityExtension.php:61 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\security-bundle\DependencyInjection\SecurityExtension.php on line 61