Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\File\File' not found in /home/app/htdocs/message_gateway/vendor/symfony/http-foundation/File/UploadedFile.php:25 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/symfony/http-foundation/File/UploadedFile.php on line 25