How to integrate api platform with symfony

I am using the Platform API framework with fresh Symfony installation.

composer require api
composer require webonyx/graphql-php

in debug routes
php bin/console debug:router
I got :

  • api_entrypoint ANY ANY ANY /api/{index}.{_format}
  • api_doc ANY ANY ANY /api/docs.{_format}
  • api_graphql_entrypoint ANY ANY ANY /api/graphql
  • api_graphql_graphiql ANY ANY ANY /api/graphql/graphiql
  • api_graphql_graphql_playground ANY ANY ANY /api/graphql/graphql_playground

but nothing work (no api platform interface).

Any help?