A PHP Error was encountered

Severity: Notice

Message: Undefined index: user_id

Filename: views/header_view.php

Line Number: 489

Backtrace:

File: /var/www/app.hlhltd.co.uk/httpdocs/application/views/header_view.php
Line: 489
Function: _error_handler

File: /var/www/app.hlhltd.co.uk/httpdocs/application/views/login_view.php
Line: 1
Function: view

File: /var/www/app.hlhltd.co.uk/httpdocs/application/controllers/General.php
Line: 35
Function: view

File: /var/www/app.hlhltd.co.uk/httpdocs/application/controllers/General.php
Line: 16
Function: check_logged_in

File: /var/www/app.hlhltd.co.uk/httpdocs/index.php
Line: 315
Function: require_once