A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Home.php

Line Number: 120

Backtrace:

File: /home/doctorsae/public_html/application/controllers/Home.php
Line: 120
Function: _error_handler

File: /home/doctorsae/public_html/index.php
Line: 331
Function: require_once