"Infinite type inference loop" warning

[ronanyeah]

Commit: e2b8392

Command: elm-open-api ./openapi.json --output-dir ./src/ --server http://localhost:8888

Output:

Warning: Infinite type inference loop!  Whoops.  This is an issue with elm-codegen.  If you can report this to the elm-codegen repo, that would be appreciated!
  at ./src//Codegen/Api.elm -> simpleHandler

Files: https://gist.github.com/ronanyeah/6181c83f994212a9b503428e01863050