Fatal error: Uncaught Error: Class 'Composer\Command\UpdateCommand' not found in /home/soh-works/www/3good_old/vendor/symfony/flex/src/Command/UpdateCommand.php:19 Stack trace: #0 {main} thrown in /home/soh-works/www/3good_old/vendor/symfony/flex/src/Command/UpdateCommand.php on line 19