教えてください。
yt-dlpでyoutube年齢制限動画がDLできなくなりました。
今まではfirefoxでログインして、クッキー読ませてたのですが、何か違ってますでしょうか・・・

E:\yt-dlp>yt-dlp --cookies-from-browser firefox https://www.youtube.com/watch?v=KZDmHaTDlGQ
Extracting cookies from firefox
Extracted 1379 cookies from firefox
[youtube] Extracting URL: https://www.youtube.com/watch?v=KZDmHaTDlGQ
[youtube] KZDmHaTDlGQ: Downloading webpage
[youtube] KZDmHaTDlGQ: Downloading tv downgraded player API JSON
[youtube] KZDmHaTDlGQ: Downloading web safari player API JSON
WARNING: [youtube] KZDmHaTDlGQ: n challenge solving failed: Some formats may be missing. Ensure you have a supported JavaScript runtime and challenge solver script distribution installed. Review any warnings presented before this message. For more details, refer to https://github.com/yt-dlp/yt-dlp/wiki/EJS
WARNING: Only images are available for download. use --list-formats to see them
ERROR: [youtube] KZDmHaTDlGQ: Requested format is not available. Use --list-formats for a list of available formats