the same is happening to me when trying to build the service:

b = bentoml.bentos.build(
    service="service.py",
    include=['*.py'],
    python=dict(
        packages=["scikit-learn"],
        lock_packages=True,
    ),
    build_ctx='/tmp',
)

throws

NotFound: no Bentos with name 'iris_clf' exist in BentoML store <osfs '/Users/almogbaku/bentoml/bentos'>