Missing Method in ActivitiesController

Error: The action add is not defined in controller ActivitiesController

Error: Create ActivitiesController::add() in file: app/controllers/activities_controller.php.

<?php
class ActivitiesController extends AppController {

	var $name = 'Activities';


	function add() {

	}

}
?>

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