How to configure the Slim 3 passthrough?

Question

I’m trying to build a simple API for study with Slim Framework and Jwtauthentication. In case my path /auth returns a JSON containing the JWT token that will be used to access the other paths. But when trying to access the /auth Jwtauthentication returns a STATUS code 401, even if I set the passthrough to the /auth resource.

Now if I put "ignore" instead of "passthrough" it works right.

File . htaccess

RewriteEngine On
 
RewriteRule .* - [env=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
 
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [QSA,L]

My index.php

<?php

require "vendor/autoload.php";

use Firebase\JWT\JWT;

$container['secret'] = "secretloko";

$app = new \Slim\App($container);

$app->add(new \Tuupola\Middleware\HttpBasicAuthentication([

	//Lista de usuários
	"users" => [
		"root" => "toor"
	],

	"paths" => ["/auth"]

]));

$app->add(new \Tuupola\Middleware\JWTAuthentication([
    "path" => "/",
    "passthrough" => ["/auth"],
    "secret" => $container['secret'],
    "error" => function ($options) use ($app) {
    	print_r($options);
	}

]));

$app->get("/auth", function ($request, $response, $args) use ($app){

	$key = $this->get('secret');

	$payload = array(
		"iss" => "root",
		"adm" => "true"
 	);

 	$jwt = JWT::encode($payload, $key);

	return $response->withJson(["token" => $jwt], 200)->withHeader("Content-type", "application/json");
});

$app->run();

?>

Result when trying to access http://localhost/auth

Slim\Http\Response Object
(
    [status:protected] => 401
    [reasonPhrase:protected] => 
    [protocolVersion:protected] => 1.1
    [headers:protected] => Slim\Http\Headers Object
        (
            [data:protected] => Array
                (
                )

        )

    [body:protected] => Slim\Http\Body Object
        (
            [stream:protected] => Resource id #72
            [meta:protected] => 
            [readable:protected] => 
            [writable:protected] => 
            [seekable:protected] => 
            [size:protected] => 
            [isPipe:protected] => 
        )

)