Fatal error: Uncaught Error: Class "Doctrine\Persistence\Mapping\Driver\FileDriver" not found in /var/www/html/API_Forum/vendor/doctrine/orm/src/Mapping/Driver/XmlDriver.php:44 Stack trace: #0 {main} thrown in /var/www/html/API_Forum/vendor/doctrine/orm/src/Mapping/Driver/XmlDriver.php on line 44