Fatal error: Uncaught Error: Class "Bitrix\Main\Loader" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\iblock\lib\Integration\UI\EntityEditor\PropertyProvider.php:19 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\iblock\lib\Integration\UI\EntityEditor\PropertyProvider.php on line 19