Support for Pioneer and JVC-Kenwood car audio head units has been deprecated. This means it will no longer be possible to launch the built-in Spotify app from the interface, but you should still be able to play audio from your mobile devices via Bluetooth or through a USB cable.
This is from Spotify on this site titled Connection issues with car stereo receivers. https://community.spotify.com/t5/Ongoing-Issues/Connection-issues-with-car-stereo-receivers/idi-p/5341849
The solution is just disabling the Spotify Input as a source and using the Bluetooth source instead.