BI1FOF

When I did finetune with setting ```input.json/train/numb_models = 1```, a ```NotADirectoryError``` occured. ``` Traceback (most recent call last): File "/argo/staging/script", line 33, in output = op_obj.execute(input) File "/tmp/inputs/artifacts/dflow_python_packages/MY_PATH/python3.11/site-packages/dflow/python/op.py", line 136,...