Error in production on Heroku

[thebetternewt]

Hi. Great graphQL plugin! Thank you!

I am having an issue deploying to Heroku with express. I am actually using apollo-server-express for my server. Voyager works perfectly fine when running in development locally, but when deployed to production, I get the following error:

TypeError: Cannot read property '__schema' of undefined

I get the "Loading..." screen, and then Voyager flashes for a moment. Then things go blank and I get the error message in the console along with a POST 400 Bad Request error.

Is there something special I need to do to get Voyager to work with Express running on Heroku?

Thanks!

[IvanGoncharov]

@thebetternewt apollo-server-express disable introspection in production:

The default behavior of apollo-server's integrated graphql-playground is for it to be disabled (along with introspection queries) when NODE_ENV=production.

apollographql/apollo-server#1571 (comment)

[isihu]

For anyone stumbling over this, the issue can be fixed by setting the MaximumQueryDepth param to a really high number or simply removing it. This is not something you wanna do for production, ofc.