Missing Method in CommentsController

You are seeing this error because the action about_message.html is not defined in controller CommentsController

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

Fatal: Confirm you have created the CommentsController::about_message.html() in file : app/controllers/comments_controller.php

<?php
class CommentsController extends AppController {
   function about_message.html() {
   }
}
?>