Fatal error: Uncaught Error: Class "Bitrix\Calendar\Sharing\Notification\Service" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\sharing\notification\mail.php:11 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\sharing\notification\mail.php on line 11