A PHP Error was encountered

Severity: Notice

Message: Undefined variable: chaptervideos

Filename: views/coursedetail.php

Line Number: 145

Backtrace:

File: /var/www/html/application/views/coursedetail.php
Line: 145
Function: _error_handler

File: /var/www/html/application/controllers/Courses.php
Line: 602
Function: view

File: /var/www/html/index.php
Line: 317
Function: require_once