Fatal error: Uncaught Error: Class 'Symfony\Component\HttpFoundation\HeaderBag' not found in D:\site\resim\ckfinder\core\connector\php\vendor\symfony\http-foundation\ResponseHeaderBag.php:19 Stack trace: #0 {main} thrown in D:\site\resim\ckfinder\core\connector\php\vendor\symfony\http-foundation\ResponseHeaderBag.php on line 19