Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Dumper\FileDumper" not found in /users/ms-it/www/oc/lib/composer/symfony/translation/Dumper/JsonFileDumper.php:21 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/composer/symfony/translation/Dumper/JsonFileDumper.php on line 21