Fatal error: Uncaught Error: Class "Symfony\Component\VarDumper\Dumper\CliDumper" not found in /media/jean/learning/huagai/drupal/vendor/symfony/var-dumper/Dumper/HtmlDumper.php:22 Stack trace: #0 {main} thrown in /media/jean/learning/huagai/drupal/vendor/symfony/var-dumper/Dumper/HtmlDumper.php on line 22