Fatal error: Uncaught Error: Class "Bitrix\Sale\Exchange\Integration\Admin\LinkBase" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\sale\lib\exchange\integration\admin\defaultlink.php:5 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\sale\lib\exchange\integration\admin\defaultlink.php on line 5