You are seeing this error because controller ScrapbookController could not be found.
Notice: this error is being rendered by the
view file, a user-customizable error page for handling invalid controller dispatches.
Fatal: Unable to load controller ScrapbookController
Fatal: Create Class:
class ScrapbookController extends AppController
var $name = 'Scrapbook';
in file : app/controllers/scrapbook_controller.php