Fatal error: Uncaught Error: Class "Doctrine\Persistence\Event\LoadClassMetadataEventArgs" not found in /var/www/html/vendor/doctrine/orm/src/Event/LoadClassMetadataEventArgs.php:16 Stack trace: #0 {main} thrown in /var/www/html/vendor/doctrine/orm/src/Event/LoadClassMetadataEventArgs.php on line 16