Training process failed with exit code 1:
File "/opt/conda/envs/lerobot/lib/python3.10/site-packages/datasets/formatting/formatting.py", line 515, in format_column
formatted_batch = self.format_batch(pa_table)
File "/opt/conda/envs/lerobot/lib/python3.10/site-packages/datasets/formatting/formatting.py", line 536, in format_batch
return self.transform(batch)
File "/lerobot/lerobot/common/datasets/utils.py", line 272, in hf_transform_to_torch
items_dict[key] = [x if isinstance(x, str) else torch.tensor(x) for x in items_dict[key]]
File "/lerobot/lerobot/common/datasets/utils.py", line 272, in <listcomp>
items_dict[key] = [x if isinstance(x, str) else torch.tensor(x) for x in items_dict[key]]
RuntimeError: Could not infer dtype of NoneType