WARNING: unable to extract channel id for https://www.youtube.com/channel/UCnv0gfLQFNGPJ5MHSGuIAkw

[firstcoffeethencode]

• [x ] I'm reporting a broken site support
• [x ] I've verified that I'm running youtube-dl version 2019.07.02
• [x ] I've checked that all provided URLs are alive and playable in a browser
• [x ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [x ] I've searched the bugtracker for similar issues including closed ones

Verbose log

[download] Downloading video 109 of 777
[youtube] KFLOT_BmINI: Downloading webpage
[youtube] KFLOT_BmINI: Downloading video info webpage
WARNING: unable to extract channel id; 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.
WARNING: video doesn't have subtitles
[youtube] KFLOT_BmINI: Downloading thumbnail ...
[youtube] KFLOT_BmINI: Writing thumbnail to: HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.jpg
[debug] Invoking downloader on 'https://r5---sn-vgqskned.googlevideo.com/videoplayback?expire=1562804119&ei=NismXa-YMcjN8wShp6KYCw&ip=173.88.16.129&id=o-AH_vYWarYLqMWAPSWMS9U2_7qq_lTKiIdVSS1JCEprbN&itag=302&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278%2C298%2C302&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-vgqskned%2Csn-p5qs7nel&ms=au%2Conr&mv=m&mvi=4&pl=20&initcwndbps=1820000&mime=video%2Fwebm&gir=yes&clen=86022036&dur=1089.237&lmt=1530418535796904&mt=1562782368&fvip=6&keepalive=yes&c=WEB&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=ALgxI2wwRQIhAJ8xir1hNbP4vBnUZFOJqLwLUzsdQgcASbgAlFGpUDNZAiB1UrbHo5hcsxBQs0TBbjbrumkGc_UEmdnJcvldIoBIiA%3D%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRAIgG3brqX9R1Hf5wStm2R4P_PuYCnorotxSQfvgMV9twjsCIDXrUoCKPGIYfAfzpWcawexLak-gcnYNji_qxXuHKw2d&ratebypass=yes'
[download] Destination: HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f302.webm
[download] 100% of 82.04MiB in 00:47
[debug] Invoking downloader on 'https://r5---sn-vgqskned.googlevideo.com/videoplayback?expire=1562804119&ei=NismXa-YMcjN8wShp6KYCw&ip=173.88.16.129&id=o-AH_vYWarYLqMWAPSWMS9U2_7qq_lTKiIdVSS1JCEprbN&itag=251&source=youtube&requiressl=yes&mm=31%2C26&mn=sn-vgqskned%2Csn-p5qs7nel&ms=au%2Conr&mv=m&mvi=4&pl=20&initcwndbps=1820000&mime=audio%2Fwebm&gir=yes&clen=16718447&dur=1089.261&lmt=1530419934027871&mt=1562782368&fvip=6&keepalive=yes&c=WEB&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=ALgxI2wwRQIhAP9HpJny-fsvqyCPCTTbxgK0wKF71NI2vdE4nWJ6R3tcAiBGLVE2GV6NAILLGsfD5d1mGaTuo93y0ONdyVumk2cXjA%3D%3D&lsparams=mm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AHylml4wRAIgG3brqX9R1Hf5wStm2R4P_PuYCnorotxSQfvgMV9twjsCIDXrUoCKPGIYfAfzpWcawexLak-gcnYNji_qxXuHKw2d&ratebypass=yes'
[download] Destination: HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f251.webm
[download] 100% of 15.94MiB in 00:09
[ffmpeg] Merging formats into "HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.mkv"
[debug] ffmpeg command line: ffmpeg -y -i 'file:HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f302.webm' -i 'file:HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f251.webm' -c copy -map 0✌️0 -map 1🅰️0 'file:HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.temp.mkv'
Deleting original file HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f302.webm (pass -k to keep)
Deleting original file HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.f251.webm (pass -k to keep)
[ffmpeg] Adding metadata to 'HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.mkv'
[debug] ffmpeg command line: ffmpeg -y -i 'file:HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.mkv' -c copy -metadata 'title=Hackaday Live : Dr. Rajib Shubert - Virus stamping for targeted single cell infection' -metadata date=20180531 -metadata 'description=Dr. Rajib Shubert, (Caltech) Virus stamping for targeted single cell infection' -metadata 'comment=Dr. Rajib Shubert, (Caltech) Virus stamping for targeted single cell infection' -metadata 'purl=https://www.youtube.com/watch?v=KFLOT_BmINI' -metadata artist=HACKADAY 'file:HACKADAY/HACKADAY - Uploads from HACKADAY/Uploads from HACKADAY - S01E109 - Hackaday Live - Dr. Rajib Shubert - Virus stamping for targeted single cell infection.temp.mkv'
[ffmpeg] There aren't any subtitles to embed

Command used:

youtube-dl --verbose -i --match-filter "playlist_title !='Liked videos' & playlist_title != 'Favorites'" -f "(bestvideo[vcodec^=av01][height>=1080][fps>30]/bestvideo[vcodec=vp9.2]
[height>=1080][fps>30]/bestvideo[vcodec=vp9][height>=1080][fps>30]/bestvideo[vcodec^=av01]
[height>=1080]/bestvideo[vcodec=vp9.2][height>=1080]/bestvideo[vcodec=vp9]
[height>=1080]/bestvideo[height>=1080]/bestvideo[vcodec^=av01][height>=720]
[fps>30]/bestvideo[vcodec=vp9.2][height>=720][fps>30]/bestvideo[vcodec=vp9][height>=720]
[fps>30]/bestvideo[vcodec^=av01][height>=720]/bestvideo[vcodec=vp9.2]
[height>=720]/bestvideo[vcodec=vp9][height>=720]/bestvideo[height>=720]/bestvideo)+
(bestaudio[acodec=opus]/bestaudio)/best" --merge-output-format mkv -o "%(uploader)s/%(uploader)s - %(playlist)s/%(playlist)s - S01E%(playlist_index)s - %(title)s.%(ext)s" --download-archive youtube_hacking_tutorials_downloaded.txt --embed-subs --write-sub --sub-lang en --ignore-errors --no-continue --no-overwrites --no-post-overwrites --write-thumbnail --add-metadata "https://www.youtube.com/channel/UCnv0gfLQFNGPJ5MHSGuIAkw"