IndexError: list index out of range

[ashwath1295]

C:\Users\masysna1\Desktop\aswath-hiwi\Data EEG\MNE_ML-master>python main.py lda
2022-02-24 09:35:29.737102: W tensorflow/stream_executor/platform/default/dso_loader.cc:64] Could not load dynamic library 'cudart64_110.dll'; dlerror: cudart64_110.dll not found
2022-02-24 09:35:29.741653: I tensorflow/stream_executor/cuda/cudart_stub.cc:29] Ignore above cudart dlerror if you do not have a GPU set up on your machine.
Traceback (most recent call last):
File "C:\Users\masysna1\Desktop\aswath-hiwi\Data EEG\MNE_ML-master\main.py", line 81, in
X, Y = data_loading.read_data(param)
File "C:\Users\masysna1\Desktop\aswath-hiwi\Data EEG\MNE_ML-master\data_loading.py", line 61, in read_data
epochs_target = mne.concatenate_epochs(epochs_target)
File "", line 24, in concatenate_epochs
File "C:\Users\masysna1\AppData\Local\Programs\Python\Python39\lib\site-packages\mne\epochs.py", line 3521, in concatenate_epochs
return _finish_concat(*_concatenate_epochs(epochs_list,
File "C:\Users\masysna1\AppData\Local\Programs\Python\Python39\lib\site-packages\mne\epochs.py", line 3385, in _concatenate_epochs
out = epochs_list[0]
IndexError: list index out of range