Fatal error: Uncaught Error: Interface 'Symfony\Component\VarDumper\Dumper\DataDumperInterface' not found in /mnt/volume_lon1_01/backend/admin/vendor/symfony/var-dumper/Dumper/ServerDumper.php:23 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/symfony/var-dumper/Dumper/ServerDumper.php on line 23