Error when changing headers

[cr1gger]

When I change the Accept-Language header from en_US, en to ru_RU, ru, an error occurs:
'utils.fv(...).forEach is not a function'
it's result function api.getArtist

Example my code:
let artist_yt_info = await api.getArtist(id) try{ var artist_yt_pl_id = artist_yt_info.products.songs.browseId } catch (e) { console.log(artist_yt_info) process.exit(1); }