Missing Controller

Error: Differsdb817Controller could not be found.

Error: Create the class Differsdb817Controller below in file: app/controllers/differsdb817_controller.php

<?php
class Differsdb817Controller extends AppController {

	var $name = 'Differsdb817';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp