Fatal error: Uncaught Error: Class "Bitrix\Im\Call\Integration\AbstractEntity" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\im\lib\call\integration\chat.php:14 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\im\lib\call\integration\chat.php on line 14