A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_ACCEPT_LANGUAGE

Filename: core/Controller.php

Line Number: 84

Backtrace:

File: /home/trosbeiaard/public_html/application/controllers/Travel.php
Line: 11
Function: __construct

File: /home/trosbeiaard/public_html/index.php
Line: 292
Function: require_once