Fatal error: Uncaught Error: Class "Concrete\Core\Page\Command\AbstractRebuildIndexCommand" not found in /var/www/html/TopTierElectric/public/concrete/src/User/Command/RebuildUserIndexCommand.php:10 Stack trace: #0 {main} thrown in /var/www/html/TopTierElectric/public/concrete/src/User/Command/RebuildUserIndexCommand.php on line 10