Fatal error: Uncaught Error: Class "Symfony\Component\Console\Command\Command" not found in /home/qcsvlel/www/core/tests/Drupal/TestSite/Commands/TestSiteTearDownCommand.php:22 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/tests/Drupal/TestSite/Commands/TestSiteTearDownCommand.php on line 22