Missing Controller

Error: Sg.shtmlController could not be found.

Error: Create the class Sg.shtmlController below in file: app/controllers/sg.shtml_controller.php

<?php
class Sg.shtmlController extends AppController {

	var $name = 'Sg.shtml';
}
?>

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