MediaCollectorLibary/app/Controllers/Controller.php

<?php

namespace App\Controllers;

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Views\Twig;

abstract class Controller
{
    protected $view;
    
    public function __construct(Twig $view)
    {
        $this->view = $view;
    }
    
    protected function json(Response $response, $data, int $status = 200): Response
    {
        $response->getBody()->write(json_encode($data));
        return $response
            ->withHeader('Content-Type', 'application/json')
            ->withStatus($status);
    }
}