A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Frontend.php

Line Number: 448

Backtrace:

File: /home/geedf/public_html/salu/application/controllers/Frontend.php
Line: 448
Function: _error_handler

File: /home/geedf/public_html/salu/index.php
Line: 315
Function: require_once