New Symfony Edition (Symfony 4) Less . The core Symfony team decided not to provide Symfony Standard Edition for Symfony 4.0, which means that when you run composer create-project symfony/skeleton you download the minimum package to run the application, and you need to download the necessary packages, and you need to explicitly add all the dependencies that you want to depend on (twig, routing ...) look here for another package . But new visitors can be difficult, and the core Symfony team decided to provide a publication with the minimum standard Symfony features. You will get it using composer create-project symfony/website-skeleton . You have more explanation here.
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