Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\debug-bundle\DependencyInjection\DebugExtension.php:29 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\debug-bundle\DependencyInjection\DebugExtension.php on line 29