Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\Command\AbstractConfigCommand" not found in /var/www/html/vendor/symfony/framework-bundle/Command/ConfigDumpReferenceCommand.php:36 Stack trace: #0 {main} thrown in /var/www/html/vendor/symfony/framework-bundle/Command/ConfigDumpReferenceCommand.php on line 36