Missing Method in PrincipalController

You are seeing this error because the action 1 is not defined in controller PrincipalController

If you want to customize this error message, create coolubuntuapps/views/errors/missing_action.thtml.

Fatal: Confirm you have created the PrincipalController::1() in file : coolubuntuapps/controllers/principal_controller.php

<?php
class PrincipalController extends AppController {
   function 1() {
   }
}
?>