Fatal error: Uncaught Error: Class "Doctrine\Bundle\DoctrineBundle\Command\Proxy\DoctrineCommandHelper" not found in /var/www/html/vendor/doctrine/doctrine-migrations-bundle/Command/Helper/DoctrineCommandHelper.php:24 Stack trace: #0 {main} thrown in /var/www/html/vendor/doctrine/doctrine-migrations-bundle/Command/Helper/DoctrineCommandHelper.php on line 24