ArrowTypeError: Expected bytes, got a 'float' object, when trying to make a dataset from a list of dicts

🤗Datasets
3

Hi :slight_smile:
it contains 507 dictionaries:

>>> sp_train
>>> {'id': 'SP-201', 'question': 'Imagine you are in a room, with no doors, windows, or anything. How do you get out?', 'answer': 'Stop imagining.', 'distractor1': 'Break the Wall.', 'distractor2': 'Jump out of the roof.', 'distractor(unsure)': 'None of above.', 'label': 0, 'choice_list': ['Stop imagining.', 'Jump out of the roof.', 'Break the Wall.', 'None of above.'], 'choice_order': [0, 2, 1, 3]}
>>> sp_train.shape
>>> (507,)
>>> sp_train.dtype
>>> object

it is a 1 dimensional ndarray