You are seeing this error because controller ThemeController could not be found.
Notice: this error is being rendered by the app/views/errors/missing_controller.thtml
view file, a user-customizable error page for handling invalid controller dispatches.
Fatal: Unable to load controller ThemeController
Fatal: Create Class:
<?php
class ThemeController extends AppController
{
var $name = 'Theme';
}
?>
in file : app/controllers/theme_controller.php