A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/Bbs.php

Line Number: 27

Backtrace:

File: /home/sangsang9/application/controllers/Bbs.php
Line: 27
Function: _error_handler

File: /home/sangsang9/index.php
Line: 316
Function: require_once