Fatal error: Uncaught Error: Class "App\Install\Command\BaseStepExecutorCommand" not found in C:\xampp\htdocs\SuiteCRM-8.9.2\core\backend\Install\Command\UpgradeCommand.php:44 Stack trace: #0 {main} thrown in C:\xampp\htdocs\SuiteCRM-8.9.2\core\backend\Install\Command\UpgradeCommand.php on line 44