Fatal error: Uncaught Error: Class 'Symfony\Component\Translation\Dumper\FileDumper' not found in /opt/lampp/htdocs/vendor/symfony/translation/Dumper/QtFileDumper.php:21 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/vendor/symfony/translation/Dumper/QtFileDumper.php on line 21