ValueError: max() arg is an empty sequence怎么解决

[cdd300]

Traceback (most recent call last):
File "D:\MockingBird-main\pre.py", line 74, in
preprocess_dataset(**vars(args))
File "D:\MockingBird-main\synthesizer\preprocess.py", line 88, in preprocess_dataset
print("Max input length (text chars): %d" % max(len(m[5]) for m in metadata))
ValueError: max() arg is an empty sequence

[Yuyang-Wu]

Looks like you are in a windows OS.
In README it says "Not compatible with Windows."