Fatal error: Uncaught Error: Class "App\Engine\LegacyHandler\LegacyHandler" not found in D:\htdocs\SuiteCRM\core\backend\Data\LegacyHandler\RecordMarkAsReadHandler.php:37 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\core\backend\Data\LegacyHandler\RecordMarkAsReadHandler.php on line 37