same problem for me in android studio

showing video unavailable error code 15

YouTubePlayerView youTubePlayerView = findViewById(R.id.youtubePlayerView);
getLifecycle().addObserver(youTubePlayerView);

youTubePlayerView.addYouTubePlayerListener(new AbstractYouTubePlayerListener() {
    @Override
    public void onReady(YouTubePlayer youTubePlayer) {
        String videoId = "dQw4w9WgXcQ";
        youTubePlayer.loadVideo(videoId, 0);
    }
});