A PHP Error was encountered

Severity: Notice

Message: A non well formed numeric value encountered

Filename: lesson/Lesson.php

Line Number: 209

Backtrace:

File: /var/www/kurikulumotp.com/public/application/controllers/lesson/Lesson.php
Line: 209
Function: _error_handler

File: /var/www/kurikulumotp.com/public/index.php
Line: 324
Function: require_once