Fatal error: Uncaught Error: Class "Bitrix\Main\Update\Stepper" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\catalog\lib\Access\Permission\Catalog\IblockCatalogPermissionStepper.php:19 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\catalog\lib\Access\Permission\Catalog\IblockCatalogPermissionStepper.php on line 19