A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Language.php

Line Number: 109

Backtrace:

File: C:\inetpub\wwwroot\application\controllers\Language.php
Line: 109
Function: _error_handler

File: C:\inetpub\wwwroot\index.php
Line: 315
Function: require_once