While using the Python client to iterate models by `order_by_id` it results in an error

[rareddy]

Describe the bug
While using the Python client to iterate models by order_by_id it results in an error

To Reproduce
execute following code

for version in registry.get_model_versions("mnist").order_by_id():
      print(version)

This ends up in UNSPECIFIED_FIELD

Expected behavior
should return the result with out an error

Additional context
Add any other context about the problem here.