Fatal error: Uncaught Error: Class "Doctrine\Persistence\Mapping\Driver\FileDriver" not found in /var/www/crm_killing_ninja/vendor/doctrine/orm/src/Mapping/Driver/YamlDriver.php:35 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/doctrine/orm/src/Mapping/Driver/YamlDriver.php on line 35