A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Home.php

Line Number: 36

Backtrace:

File: /home/avicennexo/www/application/controllers/Home.php
Line: 36
Function: _error_handler

File: /home/avicennexo/www/index.php
Line: 316
Function: require_once