Fatal error: Uncaught Error: Class "Bitrix\Main\UI\Selector\EntityBase" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\main\lib\ui\selector\usergroups.php:15 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\main\lib\ui\selector\usergroups.php on line 15