I started a new project in new Symfony 5 and i can't open my local server. On Symfony 4.4 the command PHP bin/console server:run is OK, But with Symfony 5 the command appears not to be defined......

How can I implement IntlDateFormatter in Symfony 4.4. With reference to https://symfony.com/doc/current/components/intl.html I have installed symfony/intl Now when I use it in my code: use Symfony\...