Fatal error: Uncaught Error: Class 'Composer\Util\RemoteFilesystem' not found in /home/soh-works/www/Stepup_test/vendor/symfony/flex/src/ParallelDownloader.php:24 Stack trace: #0 {main} thrown in /home/soh-works/www/Stepup_test/vendor/symfony/flex/src/ParallelDownloader.php on line 24