A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: selecao/post.php

Line Number: 21

Backtrace:

File: /export/var/www/cienciapolitica/application/views/selecao/post.php
Line: 21
Function: _error_handler

File: /export/var/www/cienciapolitica/application/core/MY_Controller.php
Line: 60
Function: view

File: /export/var/www/cienciapolitica/application/controllers/Selecao.php
Line: 47
Function: render

File: /export/var/www/cienciapolitica/index.php
Line: 293
Function: require_once