unable to run test.py #93

While running test.py the following error arises. (After running crop.py)
File "/home/blraml/projectWorkSpace/swaraj/lidar/voxelnet/utils/kitti_loader.py", line 60, in iterate_data
assert len(data_tag) == len(f_rgb) == len(f_lidar) , "dataset folder is not correct"

len(data_tag) = 7481
leb(f_rgb) = 7481
len(f_lidar) = 14962

I understand the above condition should hold true. There is some issue in files may be.

What am I missing here?
please help