how to fix a problem "Set default language to updating localizations"?

[vetsinen]

i'm trying to create a playlist programatically
insert = client.playlists.insert({"title":"playlist title","description":"pl descr"})
but api provides error:
pyyoutube.error.PyYouTubeException: YouTubeException(status_code=400,message=Set default language to updating localizations.)
where can i set this default language?

[MerleLiuKun]

Sorry for late reply

As for the docs says

You need to set default language.

Refer: https://developers.google.com/youtube/v3/docs/playlists/insert