A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_USER_AGENT

Filename: core/Custom_Controller.php

Line Number: 23

Backtrace:

File: D:\hooboowebroot\sanfufeed.com_22fqiz\web\application\home\core\Custom_Controller.php
Line: 23
Function: _error_handler

File: D:\hooboowebroot\sanfufeed.com_22fqiz\web\index.php
Line: 295
Function: require_once