BentoML

I think the return value of save_model api is a bentoml Model instance rather than a tag now

Which doc are you following? It may need to be updated.
For your case you can just access the tag by 
```
model = save_model(...)
tag = model.tag
```

<https://docs.bentoml.org/en/latest/tutorial.html#saving-models-with-bentoml|https://docs.bentoml.org/en/latest/tutorial.html#saving-models-with-bentoml>

Ah, okay. I’m following <https://docs.bentoml.org/en/latest/frameworks/pytorch_lightning.html|this doc>.

sorry. That link doesn't work on my side. Could you resend it?