A PHP Error was encountered

Severity: Warning

Message: Undefined variable $user_id

Filename: site/header_menu.php

Line Number: 278

Backtrace:

File: /var/www/html/tickets/application/views/site/header_menu.php
Line: 278
Function: _error_handler

File: /var/www/html/tickets/application/controllers/Home.php
Line: 1040
Function: view

File: /var/www/html/tickets/index.php
Line: 315
Function: require_once