A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Post.php

Line Number: 40

Backtrace:

File: /home/smkn7j07/domains/smkn7jakarta.sch.id/public_html/application/controllers/Post.php
Line: 40
Function: _error_handler

File: /home/smkn7j07/domains/smkn7jakarta.sch.id/public_html/index.php
Line: 315
Function: require_once