A PHP Error was encountered

Severity: Notice

Message: Undefined variable: video_id

Filename: main/academy_detail.php

Line Number: 26

Backtrace:

File: /var/www/html/chada/application/views/main/academy_detail.php
Line: 26
Function: _error_handler

File: /var/www/html/chada/application/core/MY_Controller.php
Line: 52
Function: view

File: /var/www/html/chada/application/controllers/Main.php
Line: 36
Function: render

File: /var/www/html/chada/index.php
Line: 315
Function: require_once