Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\File\UploadedFile' not found in /mnt/volume_lon1_01/backend/admin/vendor/symfony/psr-http-message-bridge/Factory/UploadedFile.php:22 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/symfony/psr-http-message-bridge/Factory/UploadedFile.php on line 22