Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\doctrine\doctrine-fixtures-bundle\DependencyInjection\DoctrineFixturesExtension.php:16 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\doctrine\doctrine-fixtures-bundle\DependencyInjection\DoctrineFixturesExtension.php on line 16