Funetune error with mpt-7b_dolly_sft.yaml

[alanxmay]

Finetune command:

cd scripts

composer train/train.py \
  ./train/yamls/finetune/mpt-7b_dolly_sft.yaml

Got error:

Traceback (most recent call last):
...
.../llm-foundry/llmfoundry/data/finetuning/dataloader.py", line 215, in _validate_config
    raise ValueError(
ValueError: In the dataset config, you must set either `hf_name` to use a HuggingFace dataset or set `remote` to use a streaming dataset, but both were None.