(Youtube video) - Unable to extract channel ID. Video downloading as Webm

[aalsaleh]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.04.30
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

$ youtube-dl --verbose https://www.youtube.com/watch?v=1nnRC6jDOCI
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'https://www.youtube.com/watch?v=1nnRC6jDOCI']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.04.30
[debug] Python version 2.7.10 (CPython) - Darwin-17.7.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg N-90054-g474194a8d0-tessus
[debug] Proxy map: {}
[youtube] 1nnRC6jDOCI: Downloading webpage
[youtube] 1nnRC6jDOCI: Downloading video info webpage
[youtube] {18} signature length 44.40, html5 player vflisCO7O
[youtube] {313} signature length 44.40, html5 player vflisCO7O
[youtube] {271} signature length 44.40, html5 player vflisCO7O
[youtube] {137} signature length 44.40, html5 player vflisCO7O
[youtube] {248} signature length 44.40, html5 player vflisCO7O
[youtube] {136} signature length 44.40, html5 player vflisCO7O
[youtube] {247} signature length 44.40, html5 player vflisCO7O
[youtube] {135} signature length 44.40, html5 player vflisCO7O
[youtube] {244} signature length 44.40, html5 player vflisCO7O
[youtube] {397} signature length 44.40, html5 player vflisCO7O
[youtube] {134} signature length 44.40, html5 player vflisCO7O
[youtube] {243} signature length 44.40, html5 player vflisCO7O
[youtube] {396} signature length 44.40, html5 player vflisCO7O
[youtube] {133} signature length 44.40, html5 player vflisCO7O
[youtube] {242} signature length 44.40, html5 player vflisCO7O
[youtube] {395} signature length 44.40, html5 player vflisCO7O
[youtube] {160} signature length 44.40, html5 player vflisCO7O
[youtube] {278} signature length 44.40, html5 player vflisCO7O
[youtube] {394} signature length 44.40, html5 player vflisCO7O
[youtube] {140} signature length 44.40, html5 player vflisCO7O
[youtube] {171} signature length 44.40, html5 player vflisCO7O
[youtube] {249} signature length 44.40, html5 player vflisCO7O
[youtube] {250} signature length 44.40, html5 player vflisCO7O
[youtube] {251} signature length 44.40, html5 player vflisCO7O
WARNING: unable to extract channel id; 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.
[debug] Default format spec: bestvideo+bestaudio/best
[download] Hozier - Take Me To Church (Pop-Up Show in NYC Subway)-1nnRC6jDOCI.webm has already been downloaded and merged
$ youtube-dl --version

Description

The video downloads as webm file after the above warning/error is shown.