A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: donhangmn/view.php

Line Number: 30

Backtrace:

File: /home/asiajsc/public_html/application/views/site/donhangmn/view.php
Line: 30
Function: _error_handler

File: /home/asiajsc/public_html/application/views/site/layout.php
Line: 24
Function: view

File: /home/asiajsc/public_html/application/controllers/Donhangmn.php
Line: 90
Function: view

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