A PHP Error was encountered

Severity: Notice

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

Filename: models/Base.php

Line Number: 61

Backtrace:

File: /var/www/html/manage.com.bd.front/application/models/Base.php
Line: 61
Function: _error_handler

File: /var/www/html/manage.com.bd.front/application/controllers/Product.php
Line: 70
Function: get_item_type_id_from_url

File: /var/www/html/manage.com.bd.front/index.php
Line: 315
Function: require_once