error running tufs_cnn.py

[Sandy4321]

I use windows pc and try use this file

https://github.com/Lab41/sunny-side-up/blob/master/src/examples/tufs_cnn.py

error is
File "C:\Sander\my_code\sunny-side-up-master_mar7\src\examples\tufs_cnn_changed.py", line 105, in
h5_path='amazon_split.hd5', overwrite_previous=False,shuffle=True)
File "C:\Sander\my_code\sunny-side-up-master_mar7\src\datasets\batch_data.py", line 403, in split_data
for new_data, new_labels in batch_iterator:

TypeError: 'NoneType' object is not iterable

pls help , since the project looks to be very interesting!!!