I have Spotify version 220.127.116.112.gbd112320 on Debian 10.6 stable. All of a sudden Spotify lost its ability to play songs: "No internet connection detected... (error code:4)". However it has enough internet to log me in. Playing on the web browser version works fine, as well as the iPhone app. The problems is there on several networks.
I tried the remedies mentioned in similar threads on here. I restarted Spotify, reinstalled it, deleted all the cache/config files under ~/.cache/spotify and ~/.config/spotify to no avail.
I would be very grateful for any advice on this!