Uncaught ArgumentCountError: Too few arguments to function Slim\App:

1 
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Slim\App::__construct(), 0 
passed in C:\xampp\htdocs\tutorial\public\index.php on line 4 and at least 1 expected in 
C:\xampp\htdocs\tutorial\vendor\slim\slim\Slim\App.php:57 Stack trace: #0 
C:\xampp\htdocs\tutorial\public\index.php(4): Slim\App->__construct() #1 {main} thrown in 
C:\xampp\htdocs\tutorial\vendor\slim\slim\Slim\App.php on line 57

index.php:

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

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

$app = new \Slim\App();

$app->get('/print', function(Request $request, Response $response) {
    echo 'Hello, world!';
});

$app->run();
?>
2

Hi @cergo123

Please take a quick look at the Slim 4 documentation:

http://www.slimframework.com/docs/v4/start/installation.html#step-4-hello-world

PS: echo is discouraged. Better use the $response object.