A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: views/login.php

Line Number: 81

Backtrace:

File: /home/vr63nq61hvue/public_html/application/views/login.php
Line: 81
Function: _error_handler

File: /home/vr63nq61hvue/public_html/application/controllers/Login.php
Line: 170
Function: view

File: /home/vr63nq61hvue/public_html/index.php
Line: 315
Function: require_once