Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Exception\RfcComplianceException' not found in /mnt/volume_lon1_01/backend/admin/vendor/symfony/mime/Exception/AddressEncoderException.php:17 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/symfony/mime/Exception/AddressEncoderException.php on line 17