C:\Users\Einstein\Downloads\pavan_proj\vidsum\code>python sum.py -u https://www.youtube.com/watch?v=PT2_F-1esPk
[nltk_data] Downloading package punkt to
[nltk_data] C:\Users\Einstein\AppData\Roaming\nltk_data...
[nltk_data] Package punkt is already up-to-date!
[youtube] PT2_F-1esPk: Downloading webpage
[download] 1.mp4 has already been downloaded
[download] 100% of 21.26MiB
Traceback (most recent call last):
File "sum.py", line 246, in
movie_filename, subtitle_filename = download_video_srt(url)
File "sum.py", line 216, in download_video_srt
subtitle_language = list(subtitle_info.keys())[0]
AttributeError: 'NoneType' object has no attribute 'keys'