x = np.array(x)

code

return x.to_list()

Revise the code as below
in preprocessors/libritts.py
BEFORE
if len([f for f in f0 if f != 0]) ==0 or len([e for e in energy if e != 0]):
AFTER
if len([f for f in f0 if f != 0]) ==0 or len([e for e in energy if e != 0])==0:

When I ran the preprocess.py, I would get this error: IndexError: cannot do a non-empty take from an empty axes.

Traceback (most recent call last):
File "preprocess.py", line 54, in
main(preprocessor, args.data_path, args.output_path)
File "preprocess.py", line 39, in main
datas = preprocessor.build_from_path(data_dir, out_dir)
File "/media/fish-bsp/fish_4TB/Audio/StyleSpeech-main/preprocessors/libritts.py", line 132, in build_from_path
f0 = remove_outlier(f0)

How can I revise the code to let it run successfully? Thanks.