为什么会出现这个错误啊？

[HLKunn]

Fer2013:
2021-12-06 07:57:39.699240: I tensorflow/stream_executor/platform/default/dso_loader.cc:48] Successfully opened dynamic library cudart64_101.dll
100%|██████████| 8/8 [00:00<00:00, 19.42it/s]
0%| | 0/3589 [00:00<?, ?it/s]
Traceback (most recent call last):
File "E:/人工智能应用技术/大作业/FacialExpressionRecognition/src/Gabor.py", line 301, in
evaluate_valid(2, 1, 8)
File "E:/人工智能应用技术/大作业/FacialExpressionRecognition/src/Gabor.py", line 209, in evaluate_valid
x[i] = preprocess.adaptive_histogram_equalization(x[i])
File "E:\人工智能应用技术\大作业\FacialExpressionRecognition\src\preprocess.py", line 49, in adaptive_histogram_equalization
channels[0] = clahe.apply(channels[0])
IndexError: list index out of range

Process finished with exit code 1