Not found class in Controller [closed]

The model only gives NOT FOUND in a controller that manages News.

  

ERROR: Fatal error: Class 'App \ Models \ Site \ NewsModel' not found in C: \ xampp \ htdocs \ ManagerContent \ App \ Controllers \ Site \ HomeController.php on line 13

Follow the link in pastebin to understand the problem: link

Model:

<?php

namespace App\Models\Site;

class NoticiaModel extends \ActiveRecord\Model {

    static $Table = 'noticia';
}

Controller:

<?php

namespace App\Controllers\Site;

use \App\Controllers\BaseController as Base;
use \App\Models\Site\NoticiaModel as Noticias;

class HomeController extends Base {

    public function index() {

        // List Noticias
        $Noticias = Noticias::all();
        dump($Noticias);

        $Dados = ['titulo' => 'Home'];
        $Template = $this->Twig->loadTemplate('Home.html');

        $Template->display($Dados);
    }
}