Missing Method in ArticleCategory1sController

Error: The action index is not defined in controller ArticleCategory1sController

Error: Create ArticleCategory1sController::index() in file: app\controllers\article_category1s_controller.php.

<?php
class ArticleCategory1sController extends AppController {

	var $name = 'ArticleCategory1s';


	function index() {

	}

}
?>

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