A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: helpers/app_helper.php

Line Number: 192

Backtrace:

File: /var/www/vhosts/stinfoconsulting.com/httpdocs/application/helpers/app_helper.php
Line: 192
Function: _error_handler

File: /var/www/vhosts/stinfoconsulting.com/httpdocs/application/controllers/AppController.php
Line: 63
Function: back

File: /var/www/vhosts/stinfoconsulting.com/httpdocs/index.php
Line: 315
Function: require_once