Fatal error: Uncaught Error: Class "Symfony\Component\ExpressionLanguage\Expression" not found in /media/jean/learning/huagai/drupal/vendor/symfony/dependency-injection/Loader/Configurator/ExpressionConfigurator.php:16 Stack trace: #0 {main} thrown in /media/jean/learning/huagai/drupal/vendor/symfony/dependency-injection/Loader/Configurator/ExpressionConfigurator.php on line 16