Missing Controller

Error: Blog-category-21.htmlController could not be found.

Error: Create the class Blog-category-21.htmlController below in file: app/controllers/blog-category-21.html_controller.php

<?php
class Blog-category-21.htmlController extends AppController {

	var $name = 'Blog-category-21.html';
}
?>

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