A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: user/product_category.php

Line Number: 31

Backtrace:

File: /var/www/vhosts/alangstore.com/httpdocs/application/views/user/product_category.php
Line: 31
Function: _error_handler

File: /var/www/vhosts/alangstore.com/httpdocs/application/controllers/User.php
Line: 113
Function: view

File: /var/www/vhosts/alangstore.com/httpdocs/index.php
Line: 315
Function: require_once