A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'file' of non-object

Filename: controllers/Lessonsfiles.php

Line Number: 18

Backtrace:

File: /var/www/html/application/modules/courses/controllers/Lessonsfiles.php
Line: 18
Function: _error_handler

File: /var/www/html/index.php
Line: 320
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'file' of non-object

Filename: controllers/Lessonsfiles.php

Line Number: 19

Backtrace:

File: /var/www/html/application/modules/courses/controllers/Lessonsfiles.php
Line: 19
Function: _error_handler

File: /var/www/html/index.php
Line: 320
Function: require_once