1.5.0 not working in production environment

[swelther]

Beginning with version 1.5.0 of this gem the GraphiQL frontend does not load in production environments. Chrome console output:

application-62bfd22d15244d19e3fe71894ec33a25361eac62e7b985cf9206122d51a6e0ae.js:22 Uncaught Error: Cannot use t "__Schema" from another module or realm.

Ensure that there is only one instance of "graphql" in the node_modules
directory. If different versions of "graphql" are the dependencies of other
relied on modules, use "resolutions" to ensure only one version is installed.

https://yarnpkg.com/en/docs/selective-version-resolutions

Duplicate "graphql" modules cannot be used at the same time since different
versions may have different capabilities and behavior. The data from one
version used in the function from another could produce confusing and
spurious results.
    at i (application-62bfd22d15244d19e3fe71894ec33a25361eac62e7b985cf9206122d51a6e0ae.js:22)
    ....
graphiql:45 Uncaught ReferenceError: GraphiQL is not defined
    at graphiql:45

Tested with an empty Rails 5.1.4 app.

Any idea why or what? I'm not a react/node/js guy 😉

[swelther]

#58 was faster :)