Error running relay-chat

[sibelius]

When I run relay-chat, there are two problems:

On localhost:8080 (GraphQL), there is this message:

{
  "errors": [
    {
      "message": "Must provide query string."
    }
  ]
}

and on localhost:3000 (react app), nothing is rendered, this is the react developer tool result:

[oprogramador]

+1