Fatal error: Uncaught Error: Class "Bitrix\Main\Engine\Response\Json" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\report\lib\visualconstructor\internal\engine\response\component.php:16 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\report\lib\visualconstructor\internal\engine\response\component.php on line 16