Fatal error: Uncaught Error: Class "Bitrix\Calendar\Core\Base\BaseException" not found in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\internals\lockexception.php:7 Stack trace: #0 {main} thrown in D:\ktt\ttepla.com\public_html\bitrix\modules\calendar\lib\internals\lockexception.php on line 7