GraphQL page is not loading

[renja-g]

Description

The GraphQL page does not work.
It just says: "Loading..."

How to reproduce

Go to https://demo.api-platform.com/graphql/graphiql or https://demo.api-platform.com/graphql

Additional Context

I also had this problem in a personal fresh setup, via Symfony new and the installation of api-platform + graphql. But in that case, the deprecated Playground still worked. So maybe this is not a /demo problem?

[renja-g]

If you have any ideas, why this could be happening, it would be nice if you could tell me your thoughts. Since then, I could investigate / fix it in my project.

[vincentchalamon]

Hi @renja-g,

Thanks for the report. I don't know why it's not working on production, whereas it's perfectly working with new deployments.

I've added an E2E tests in #500. Once this MR merged, released and deployed, it should fix this issue.