https://developer.spotify.com/community/news/2022/04/12/libspotify-sunset/
“In 2015, we announced that we were discontinuing libspotify, a C library that developers once used to interact with Spotify and to stream audio. If you still have software that relies on libspotify then you should take steps now to adapt your application, close it down, or to replace libspotify with a supported developer product. We will be disabling access to libspotify on May 16, 2022. After that date, integrations that still use libspotify will stop working.”
Recently Spotify announced they have deprecated libspotify. We do not use this and are not affected.