Fatal error: Uncaught Error: Class "Symfony\Component\Console\Descriptor\Descriptor" not found in /home/tubu/public_html/Drupal_CMS/cms/vendor/symfony/console/Descriptor/XmlDescriptor.php:27 Stack trace: #0 {main} thrown in /home/tubu/public_html/Drupal_CMS/cms/vendor/symfony/console/Descriptor/XmlDescriptor.php on line 27