An uncaught Exception was encountered

Type: Error

Message: Undefined constant "MB"

Filename: /var/www/html/application/views/home/publication.php

Line Number: 87

Backtrace:

File: /var/www/html/application/controllers/Knowledge_resources.php
Line: 69
Function: view

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