Hi all -- working on a first project w/Graphcool, built on create-react-app. Everything wires up successfully locally, as I've set the GRAPHQL_ENDPOINT config var in '.env.local' (in root directory). I've also set the same config variable in Heroku. However, when deploying to Heroku, I receive "Error: Couldn't find a GraphQL config." I've tried creating a .graphqlconfig file, but that doesn't seem to do the trick. Assuming there's a simple solution, can anyone point me in the correct direction?