A PHP Error was encountered

Severity: Warning

Message: Missing argument 1 for Collaboration::edit_content()

Filename: controllers/Collaboration.php

Line Number: 331

Backtrace:

File: /home/woonhung/public_html/application/controllers/Collaboration.php
Line: 331
Function: _error_handler

File: /home/woonhung/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/woonhung/public_html/system/core/Exceptions.php:271)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/woonhung/public_html/application/controllers/Collaboration.php
Line: 334
Function: redirect

File: /home/woonhung/public_html/index.php
Line: 318
Function: require_once