Fatal error: Uncaught Error: Class "Bitrix\Sender\Posting\ThreadStrategy\AbstractThreadStrategy" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\sender\lib\posting\threadstrategy\tenthreadsstrategy.php:10 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\sender\lib\posting\threadstrategy\tenthreadsstrategy.php on line 10