A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/Lang.php

Line Number: 28

Backtrace:

File: /home/gepcodec/public_html/application/controllers/Lang.php
Line: 28
Function: _error_handler

File: /home/gepcodec/public_html/application/controllers/Lang.php
Line: 13
Function: validref

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