A PHP Error was encountered

Severity: Notice

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

Filename: libraries/Base_Controller.php

Line Number: 20

Backtrace:

File: C:\Users\jmdsong\Dropbox\GVMserver\newosw1\application\libraries\Base_Controller.php
Line: 20
Function: _error_handler

File: C:\Users\jmdsong\Dropbox\GVMserver\newosw1\application\controllers\User.php
Line: 7
Function: __construct

File: C:\Users\jmdsong\Dropbox\GVMserver\newosw1\index.php
Line: 318
Function: require_once