ZeroDivisionError: integer division or modulo by zero about backgroundmattingv2 HOT 10 CLOSED

(bgm2) C:\ZeroBox\src\BackgroundMattingV2> python inference_video.py --model-type mattingrefine --model-backbone resnet101 --model-checkpoint PyTorch\pytorch_resnet101.pth --video-src ..\..\group15B_Short.avi --video-bgr ..\..\background_group15B.png --output-dir output1 --output-type com fgr pha err ref --model-refine-mode full
Directory output1 already exists. Override? [Y/N]: Y
 25%|█████████████████████████████▊                                                                                          | 557/2241 [02:21<07:07,  3.94it/s]
Traceback (most recent call last):
  File "inference_video.py", line 178, in <module>
    for src, bgr in tqdm(DataLoader(dataset, batch_size=1, pin_memory=True)):
  File "C:\Users\jinzi\miniconda3\envs\bgm2\lib\site-packages\tqdm\std.py", line 1171, in __iter__
    for obj in iterable:
  File "C:\Users\jinzi\miniconda3\envs\bgm2\lib\site-packages\torch\utils\data\dataloader.py", line 435, in __next__
    data = self._next_data()
  File "C:\Users\jinzi\miniconda3\envs\bgm2\lib\site-packages\torch\utils\data\dataloader.py", line 475, in _next_data
    data = self._dataset_fetcher.fetch(index)  # may raise StopIteration
  File "C:\Users\jinzi\miniconda3\envs\bgm2\lib\site-packages\torch\utils\data\_utils\fetch.py", line 44, in fetch
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "C:\Users\jinzi\miniconda3\envs\bgm2\lib\site-packages\torch\utils\data\_utils\fetch.py", line 44, in <listcomp>
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "C:\ZeroBox\src\BackgroundMattingV2\dataset\zip.py", line 17, in __getitem__
    x = tuple(d[idx % len(d)] for d in self.datasets)
  File "C:\ZeroBox\src\BackgroundMattingV2\dataset\zip.py", line 17, in <genexpr>
    x = tuple(d[idx % len(d)] for d in self.datasets)
  File "C:\ZeroBox\src\BackgroundMattingV2\dataset\video.py", line 27, in __getitem__
    raise IndexError(f'Idx: {idx} out of length: {len(self)}')
IndexError: Idx: 557 out of length: 2241