A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'category_id' of non-object

Filename: controllers/Restaurant.php

Line Number: 27

Backtrace:

File: /home/wateenin/public_html/restaurant_menu_frontend/application/controllers/Restaurant.php
Line: 27
Function: _error_handler

File: /home/wateenin/public_html/restaurant_menu_frontend/index.php
Line: 319
Function: require_once