Fatal error: Uncaught Error: Class "Composer\Command\RequireCommand" not found in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/composer-root-update-plugin/ComposerReimplementation/ExtendableRequireCommand.php:28 Stack trace: #0 {main} thrown in /home/websupportontdem/public_html/uscabinetonline.websupportondemo.com/old/vendor/magento/composer-root-update-plugin/ComposerReimplementation/ExtendableRequireCommand.php on line 28