Fatal error: Uncaught Error: Class 'Symfony\Component\Translation\Dumper\FileDumper' not found in /home/app/htdocs/message_gateway/vendor/symfony/translation/Dumper/XliffFileDumper.php:22 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway/vendor/symfony/translation/Dumper/XliffFileDumper.php on line 22