large errors in motion_representation

[HitBadTrap]

Hi! I follow the guidance of the readme. However, the errors is too large. I'm confused about this problem. Details are as follows:
0%| | 0/29232 [00:00<?, ?it/s]
22%|██▏ | 6483/29232 [04:12<15:15, 24.86it/s]
009707.npy
cannot reshape array of size 0 into shape (0,newaxis)
54%|█████▍ | 15900/29232 [10:23<08:28, 26.21it/s]
011059.npy
cannot reshape array of size 0 into shape (0,newaxis)
96%|█████████▌| 27966/29232 [18:18<00:47, 26.54it/s]
M009707.npy
cannot reshape array of size 0 into shape (0,newaxis)
97%|█████████▋| 28455/29232 [18:36<00:29, 26.17it/s]
M011059.npy
cannot reshape array of size 0 into shape (0,newaxis)
100%|██████████| 29232/29232 [19:06<00:00, 25.49it/s]
Total clips: 29232, Frames: 4117392, Duration: 3431.160000m

1144.8027

4851.9487

[RoryTHWu]

I also had a pretty big error the first time running the script. It disappeared after the second time running the script from scratch, not sure why.