502 Bad gateway for "Remove all watched videos"

[NexusDarkshade]

Clicked "Remove watch videos" from Watch Later playlist. Nothing happened. Monitored network activity and tried again. Result below:

[kevroy314]

Can confirm. Has been happening for over a month. Also seems to happen when reordering playlists. If you delete or reorder enough times it eventually succeeds.

Edit: may be a coincidence but I think it started after I upgraded to a nest wifi pro.

[Icedude907]

Still an issue. Fix pls