Fatal error: Uncaught Error: Class "Bitrix\Sale\Exchange\Integration\Service\Internal\Entity\Base" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\sale\lib\exchange\integration\service\internal\entity\activity.php:7 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\sale\lib\exchange\integration\service\internal\entity\activity.php on line 7