Fatal error: Uncaught Error: Class "Bitrix\MessageService\Sender\Base" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\messageservice\lib\sender\baseconfigurable.php:11 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\messageservice\lib\sender\baseconfigurable.php on line 11