Fatal error: Uncaught Error: Class 'Symfony\Component\VarDumper\Dumper\CliDumper' not found in /mnt/volume_lon1_01/backend/admin/vendor/symfony/var-dumper/Dumper/HtmlDumper.php:22 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/symfony/var-dumper/Dumper/HtmlDumper.php on line 22