A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_ACCEPT_LANGUAGE

Filename: controllers/Main.php

Line Number: 35

Backtrace:

File: /var/www/amplitudedoc/www/application/controllers/Main.php
Line: 35
Function: _error_handler

File: /var/www/amplitudedoc/www/home.php
Line: 315
Function: require_once

File: /var/www/amplitudedoc/www/index.php
Line: 15
Function: include