A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Gotolink.php

Line Number: 23

Backtrace:

File: /home/vsplogin/tyto.solutions/codeigniter/controllers/Gotolink.php
Line: 23
Function: _error_handler

File: /home/vsplogin/tyto.solutions/codeigniter/index.php
Line: 286
Function: require_once

File: /home/vsplogin/ead.tyto.solutions/index.php
Line: 23
Function: require_once