The problem was not the update, but stale cache files as already reported on their github. This describes a solution: Doesn't launch Issue #277 flathub/com.spotify.Client GitHub after which Spotify is working again for me.
The problem was not the update, but stale cache files as already reported on their github. This describes a solution: Doesn't launch Issue #277 flathub/com.spotify.Client GitHub after which Spotify is working again for me.