GraphQL-js server error with empty message on windows

I have a graphql-js server on node/express.

For testing I added a ";" behind a query field name. This is what I get on Linux:

GraphQLError: Syntax Error GraphQL (13:25) Cannot parse the unexpected character ";".

12:     # Returns the video matching the given id, or null if none is found.
13:     video(id: ID): Video;

This is what I get on Windows:

GraphQLError

... I think something is not right here. I am using Windows and can't just switch. Any ideas?

via Chris