Flutter just_ audio : seekToNext is not working

I got the music list of the device and now I want to go to the next music using just_audio, but nothing happens when I press the button.

enter code here
    CircleAvatar(
                radius: 25,
                child: IconButton(
                  onPressed: () {
                    if (widget.audioPlayer.hasNext) {
                      widget.audioPlayer.seekToNext();
                    }
                  },
                  icon: Icon(Icons.skip_next),
                ),
              ),