A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_REFERER"

Filename: controllers/LanguageswitcherController.php

Line Number: 39

Backtrace:

File: C:\inetpub\vhosts\bharatcancerseva.com\httpdocs\application\controllers\LanguageswitcherController.php
Line: 39
Function: _error_handler

File: C:\inetpub\vhosts\bharatcancerseva.com\httpdocs\index.php
Line: 315
Function: require_once