use-error-handling-middleware.ex

# add this to your schema module

# if it's a field for the mutation object, add this middleware to the end
def middleware(middleware, _field, %{identifier: :mutation}) do
  middleware ++ [Idp.Middlewares.HandleAPIErrors]
end

# if it's any other object keep things as is
def middleware(middleware, _field, _object), do: middleware