hi, I want to run GPT-2 After i execute: `python -m ncc_dataset.raw_py150.completion.preprocess`,got one error as the picture: `AttributeError: type object 'SeqIndexedDataset' has no attribute 'Index'`  Looking for your reply. Thanks.
hi,
I want to run GPT-2
After i execute:
python -m ncc_dataset.raw_py150.completion.preprocess,got one error as the picture:AttributeError: type object 'SeqIndexedDataset' has no attribute 'Index'Looking for your reply.
Thanks.