IndexError: list index out of range

[AIM132]

Traceback (most recent call last):
File "/home/L/miniconda3/envs/karmadock/lib/python3.9/threading.py", line 980, in _bootstrap_inner
self.run()
File "/home/L/miniconda3/envs/karmadock/lib/python3.9/site-packages/prefetch_generator/init.py", line 80, in run
for item in self.generator:
File "/home/L/miniconda3/envs/karmadock/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 681, in next
data = self._next_data()
File "/home/L/miniconda3/envs/karmadock/lib/python3.9/site-packages/torch/utils/data/dataloader.py", line 721, in _next_data
data = self._dataset_fetcher.fetch(index) # may raise StopIteration
File "/home/L/miniconda3/envs/karmadock/lib/python3.9/site-packages/torch/utils/data/_utils/fetch.py", line 52, in fetch
return self.collate_fn(data)
File "/home/L/KarmaDock/dataset/dataloader_obj.py", line 31, in call
elem = batch[0]
IndexError: list index out of range

Does anyone know how to fix this, thanks