A PHP Error was encountered

Severity: Notice

Message: Undefined index: lang

Filename: views/header.php

Line Number: 61

Backtrace:

File: /home/itm/public_html/application/views/header.php
Line: 61
Function: _error_handler

File: /home/itm/public_html/application/controllers/Media_description.php
Line: 33
Function: view

File: /home/itm/public_html/index.php
Line: 318
Function: require_once