ERROR Class app \ Auth not found - slim framework v3 middleware

我正在使用slim框架并试图实现slim token authentication作为中间件，现在每当我去

localhost / project / restrict

我收到消息"Token Not Found"似乎工作正常但是当我尝试按照中间件documentation在授权参数中传递令牌时

locahost / project / restrict？authorization = usertokensecret

我总是得到错误类'app \ Auth'未找到，并在我的错误跟踪下面，

0 /Applications/AMPPS/www/project/vendor/dyorg/slim-token-authentication/src/TokenAuthentication.php(66）：（Object（Slim \ Http \ Request），Object（Slim \ Middleware \ TokenAuthentication） ））1 [内部函数]：Slim \ Middleware \ TokenAuthentication - > __ invoke（Object（Slim \ Http \ Request），Object（Slim \ Http \ Response），Object（Slim \ App））2 / Applications / AMPPS / www / project / vendor / slim / slim / Slim / DeferredCallable.php（43）：call_user_func_array（Object（Slim \ Middleware \ TokenAuthentication），Array）3 [内部函数]：Slim \ DeferredCallable - > __ invoke（Object（Slim \ Http \ Request） ），Object（Slim \ Http \ Response），Object（Slim \ App））4 /Applications/AMPPS/www/project/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(73）：call_user_func（Object（Slim \ DeferredCallable） ），Object（Slim \ Http \ Request），Object（Slim \ Http \ Response），Object（Slim \ App））5 /Applications/AMPPS/www/project/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(122） ）：Slim \ App-> Slim （Object（Slim \ Http \ Request），Object（Slim \ Http \ Response））6 / Application s / AMPPS / www / project / vendor / slim / slim / Slim / App.php（370）：Slim \ App-> callMiddlewareStack（Object（Slim \ Http \ Request），Object（Slim \ Http \ Response））7 / Applications / AMPPS / www / project / vendor / slim / slim / Slim / App.php（295）：Slim \ App-> process（Object（Slim \ Http \ Request），Object（Slim \ Http \ Response））8 / Applications / AMPPS / www / project / index.php（81）：Slim \ App-> run（）9

here the code i am using

<?php
use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;

require_once './vendor/autoload.php';

$app = new \Slim\App;
use Slim\App;
use Slim\Middleware\TokenAuthentication;

$config = [
    'settings' => [
        'displayErrorDetails' => true
    ]
];

$app = new App($config);

$authenticator = function($request, TokenAuthentication $tokenAuth){

    $token = $tokenAuth->findToken($request);
    $auth = new \app\Auth();
    $auth->getUserByToken($token);

};

/**
 * Add token authentication middleware
 */
$app->add(new TokenAuthentication([
    'path' =>   '/restrict',
    'authenticator' => $authenticator
]));

/**
 * Public route example
 */
$app->get('/', function($request, $response){
    $output = ['msg' => 'It is a public area'];
    $response->withJson($output, 200, JSON_PRETTY_PRINT);
});


/**
 * Restrict route example
 * Our token is "usertokensecret"
 */
$app->get('/restrict', function($request, $response){
    $output = ['msg' => 'It\'s a restrict area. Token authentication works!'];
    $response->withJson($output, 200, JSON_PRETTY_PRINT);
});


$app->run();

?>