error initializing

Hello.
first of all, I think docs are outdated, cause `APIErrorMiddleware` requires an `environment` variable.
I tried to add the middleware:
```swift
let auth = router.grouped("auth").group(APIErrorMiddleware(environment: Environment.development))
```

but it fails with error `Type of expression is ambiguous without more context`
How can I fix this?

Thanks in advance,
Dan.