Issue when trying to download playlists

[kronoxys2a]

Hi,
here is the issue:
when I try to Download a playlist (youtube-dl --extract-audio --audio-format mp3 "https://www.youtube.com/watch?v=PIb6AZdTr-A&list=RDQMYyzcXgZUmQg&index=1" --verbose).
I got that --->

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--extract-audio', u'--audio-format', u'mp3', u'https://www.youtube.com/watch?v=PIb6AZdTr-A&list=RDQMYyzcXgZUmQg&index=1', u'--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.08.13
[debug] Python version 2.7.16 (CPython) - Linux-4.19.58-v7+-armv7l-with-debian-10.0
[debug] exe versions: ffmpeg 4.1.3-1, ffprobe 4.1.3-1
[debug] Proxy map: {}
[youtube:playlist] Downloading playlist RDQMYyzcXgZUmQg - add --no-playlist to just download video PIb6AZdTr-A
[youtube:playlist] RDQMYyzcXgZUmQg: Downloading page 1 of Youtube mix
[youtube:playlist] RDQMYyzcXgZUmQg: Downloading page 2 of Youtube mix
[youtube:playlist] RDQMYyzcXgZUmQg: Downloading page 3 of Youtube mix
[youtube:playlist] RDQMYyzcXgZUmQg: Downloading page 4 of Youtube mix
[youtube:playlist] RDQMYyzcXgZUmQg: Downloading page 5 of Youtube mix
[download] Downloading playlist: Mix - Playlist 70
[youtube:playlist] playlist Mix - Playlist 70: Collected 76 video ids (downloading 76 of them)
[download] Downloading video 1 of 76
[youtube] YyzcXgZUmQg: Downloading webpage
[youtube] YyzcXgZUmQg: Downloading video info webpage
WARNING: Unable to extract video title
WARNING: unable to extract description; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
ERROR: Sorry about that.
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 796, in extract_info
ie_result = ie.extract(url)
File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 2108, in _real_extract
raise ExtractorError(error_message, expected=True)
ExtractorError: Sorry about that.

What can I do ???
Thanks ...