Fatal error: Uncaught Error: Class "App\Engine\LegacyHandler\LegacyHandler" not found in C:\xampp\htdocs\SuiteCRM-8.9.2\core\backend\Process\LegacyHandler\SendTestEmailHandler.php:53 Stack trace: #0 {main} thrown in C:\xampp\htdocs\SuiteCRM-8.9.2\core\backend\Process\LegacyHandler\SendTestEmailHandler.php on line 53