A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/Main.php

Line Number: 89

Backtrace:

File: /var/www/html/psmd/application/controllers/Main.php
Line: 89
Function: _error_handler

File: /var/www/html/psmd/index.php
Line: 315
Function: require_once