A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: models/Site_model.php

Line Number: 191

Backtrace:

File: /home/metroshi/public_html/application/models/Site_model.php
Line: 191
Function: _error_handler

File: /home/metroshi/public_html/application/controllers/Site.php
Line: 437
Function: category_wise_sub_category

File: /home/metroshi/public_html/index.php
Line: 292
Function: require_once