PreviousStepFormatError on sil-ai/bloom-speech
For a lot of configs in https://huggingface.co/datasets/sil-ai/bloom-speech, we get PreviousStepFormatError.

<img width="1013" alt="Capture d’écran 2023-07-28 à 12 46 09" src="https://github.com/huggingface/datasets-server/assets/1676121/f2160866-ce78-4654-8e3d-ea1396d1b23e">

PreviousStepFormatError on sil-ai/bloom-speech: For a lot of configs in https://huggingface.co/datasets/sil-ai/bloom-speech, we get PreviousStepFormatError.

<img width="1013" alt="Capture d’écran 2023-07-28 à 12 46 09" src="https://github.com/huggingface/datasets-server/assets/1676121/f2160866-ce78-4654-8e3d-ea1396d1b23e">
