weird error after update

[ParsaFakhar]

youtube-dl -i -f mp4 --write-sub --sub-lang en --write-auto-sub --sub-format ttml --convert-subtitles srt --embed-subs -o 'YoutubeDL/%(title)s.%(ext)s' https://www.youtube.com/watch\?v\=zt26CSwCNaoc

[youtube] zt26CSwCNao: Downloading webpage
[youtube] zt26CSwCNao: Downloading video info webpage
[youtube] zt26CSwCNao: Extracting video information
WARNING: video doesn't have subtitles
[youtube] zt26CSwCNao: Looking for automatic captions
WARNING: Couldn't find automatic captions for zt26CSwCNao
[youtube] zt26CSwCNao: Downloading js player vfl-vYfC3
ERROR: Signature extraction failed: Traceback (most recent call last):
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1191, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1102, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1163, in _parse_sig_js
jscode, 'Initial JS player signature function name', group='sig')
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 883, in _search_regex
raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
(caused by RegexNotFoundError(u'Unable to extract \x1b[0;34mInitial JS player signature function name\x1b[0m; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.',)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.