The sample problem application does not work

[mafio69]

The sample problem application does not work, I want to understand how your application works, but unfortunately the example does not work

Fatal error: Uncaught LogicException: You must set a loader first. in I:\www\demo\vendor\twig\twig\src\Environment.php:819

[mafio69]

It must be changed:
use Twig\Environment;
use Twig\Loader\FilesystemLoader;
Environment::class => function () {
$loader = new FilesystemLoader(DIR . '/../src/SuperBlog/Views');
return new Environment($loader);
},
In file config.php