Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Extractor\AbstractFileExtractor" not found in /opt/lampp/htdocs/forum/flarum/vendor/symfony/translation/Extractor/PhpExtractor.php:22 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/symfony/translation/Extractor/PhpExtractor.php on line 22