Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Resource\SelfCheckingResourceInterface" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\config\Resource\FileResource.php:23 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\config\Resource\FileResource.php on line 23