Fatal error: Uncaught Error: Interface 'Psr\EventDispatcher\EventDispatcherInterface' not found in D:\site\resim\ckfinder\core\connector\php\vendor\symfony\event-dispatcher-contracts\EventDispatcherInterface.php:19 Stack trace: #0 {main} thrown in D:\site\resim\ckfinder\core\connector\php\vendor\symfony\event-dispatcher-contracts\EventDispatcherInterface.php on line 19