A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/LanguageSwitcher.php

Line Number: 14

Backtrace:

File: C:\inetpub\wwwroot\application\controllers\LanguageSwitcher.php
Line: 14
Function: _error_handler

File: C:\inetpub\wwwroot\application\core\MY_Controller.php
Line: 8
Function: call_user_func_array

File: C:\inetpub\wwwroot\index.php
Line: 292
Function: require_once