I don't see any sdk repository, so i put my issue (not a disaster :)) in this sample repository.
com.deezer.sdk.player.AbstractTrackListPlayer#getCurrentTrack() throw an ArrayIndexOutOfBoundsException if com.deezer.sdk.player.AbstractTrackListPlayer#getTracks().size() == 0.
You should probably send null ?
By the way this sdk is realy easy to use 👍
Thanks