A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: controllers/Pages.php

Line Number: 391

Backtrace:

File: /home/vendgxtm/help.smbdesk.com/application/controllers/Pages.php
Line: 391
Function: _error_handler

File: /home/vendgxtm/help.smbdesk.com/index.php
Line: 315
Function: require_once