A PHP Error was encountered

Severity: Notice

Message: Undefined index: post_id

Filename: controllers/Baiviet.php

Line Number: 342

Backtrace:

File: /home/saigonqu/public_html/application/controllers/Baiviet.php
Line: 342
Function: _error_handler

File: /home/saigonqu/public_html/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/saigonqu/public_html/system/core/Exceptions.php:272)

Filename: core/Common.php

Line Number: 573

Backtrace:

File: /home/saigonqu/public_html/application/controllers/Baiviet.php
Line: 345
Function: show_404

File: /home/saigonqu/public_html/index.php
Line: 315
Function: require_once

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