Missing Controller

Error: Qr.htmlController could not be found.

Error: Create the class Qr.htmlController below in file: tanki.arbeit.jp/controllers/qr.html_controller.php

<?php
class Qr.htmlController extends AppController {

	var $name = 'Qr.html';
}
?>

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