What's wrong with my query, from tour

I’m trying to use Ratel to execute some basic queries. I modified one of the examples from the learning material, but it is failing to execute. I don’t know if I’m misusing Ratel or if the query is bad.

See the screen shot.

You query is a GraphQL mutation. Ratel is a DQL client. Not GraphQL.

You can use any GraphQL cliente. There a bunch of them. GraphiQL, Apollo Studio, GraphQL Playground, Altair Client, GraphQL Explore, Insomnia, Postman e others. Pick the best fits you.