Fatal error: Uncaught Error: Class "Vich\UploaderBundle\Metadata\Driver\AbstractYamlDriver" not found in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Metadata/Driver/YmlDriver.php:5 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Metadata/Driver/YmlDriver.php on line 5