A PHP Error was encountered

Severity: Notice

Message: Undefined variable: essential

Filename: templates/header.php(42) : eval()'d code

Line Number: 1

Backtrace:

File: /home/sbd/public_html/application/views/templates/header.php(42) : eval()'d code
Line: 1
Function: _error_handler

File: /home/sbd/public_html/application/views/templates/header.php
Line: 42
Function: eval

File: /home/sbd/public_html/application/controllers/Checkforcompany.php
Line: 142
Function: view

File: /home/sbd/public_html/index.php
Line: 326
Function: require_once