Preprocessing with CVSS-C dataset

[Sabo-99]

First of all, thanks to share the code of your grate work!

But, i encountered several problems while following the preprocess_scripts process with CVSS-C dataset.

First Question)

While running "prep_cvss_c_multilingual_data.py" in "2. prep_cvss_c_multilingual_data.sh", the error is reported.
It was related to the "gcmvn_feature_list" because it is empty!

Below is the printed result of gcmvn_feature_list (by using print(f"gcmvn_feature_list: {gcmvn_feature_list}")) and the reported error message.

gcmvn_feature_list: []

Traceback (most recent call last):
File "./simulst/StreamSpeech/preprocess_scripts/prep_cvss_c_multilingual_data.py", line 634, in
main()
File "./simulst/StreamSpeech/preprocess_scripts/prep_cvss_c_multilingual_data.py", line 631, in main
process(args)
File "./simulst/StreamSpeech/preprocess_scripts/prep_cvss_c_multilingual_data.py", line 355, in process
stats = cal_gcmvn_stats(gcmvn_feature_list)
File "./simulst/StreamSpeech/fairseq/examples/speech_to_text/data_utils.py", line 268, in cal_gcmvn_stats
features = np.concatenate(features_list)
ValueError: need at least one array to concatenate
finish 2.prep_cvss_c_multilingual_data.sh

Second Question)

Also, other stages (4~9) reports the errors related to the fank2unit such as belows:

FileNotFoundError: [Errno 2] No such file or directory: './simulst/dataset/cvss/cvss-c/es-en/fbank2unit/dev.tsv'
FileNotFoundError: [Errno 2] No such file or directory: './simulst/dataset/cvss/cvss-c/es-en/fbank2unit/train.tsv'
FileNotFoundError: [Errno 2] No such file or directory: './simulst/dataset/cvss/cvss-c/es-en/fbank2unit/test.tsv'

Should I configure the fbank2unit directory myself, or is it created automatically when running preprocess.sh?