Fatal error: Uncaught Error: Class "Bitrix\Im\V2\Entity\User\User" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\im\lib\V2\Entity\User\NullUser.php:5 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\im\lib\V2\Entity\User\NullUser.php on line 5