Fatal error: Uncaught Error: Class "Symfony\Component\Console\Command\Command" not found in /home3/retainin/public_html/updates/concrete5.7.5.8_remote_updater/concrete/vendor/symfony/console/Tests/Fixtures/DescriptorCommand2.php:18 Stack trace: #0 {main} thrown in /home3/retainin/public_html/updates/concrete5.7.5.8_remote_updater/concrete/vendor/symfony/console/Tests/Fixtures/DescriptorCommand2.php on line 18