How to run Slim on XAMPP?

Question

PHP

Hello!
In the process of searching for a solution through Yandex, I found an identical question, to which I have nothing to add. The situation is the same 1 in 1: https://ru.stackoverflow.com/questions/1010320/sli...

In the same way I tried to install Slim strictly according to the manual, I got the same errors. Maybe someone also came across and found a solution?

My index is in public:

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

require __DIR__ . '/../vendor/autoload.php';

$app = AppFactory::create();

$app->setBasePath("/Slimtest/public");

$app->get('/', function (Request $request, Response $response, $args) {
    $response->getBody()->write("Hello world!");
    return $response;
});

$app->run();