'Unfortunately app has stopped' errors

[minhtam1212]

Android, cordova 6.2.0, Error detail, please help me fix that

java.lang.NullPointerException: rhs == null
at java.lang.String.compareTo(Native Method)
at org.apache.cordova.media.AudioPlayer.readyPlayer(AudioPlayer.java:492)
at org.apache.cordova.media.AudioPlayer.startPlaying(AudioPlayer.java:217)
at org.apache.cordova.media.AudioHandler.resumeAllGainedFocus(AudioHandler.java:394)
at org.apache.cordova.media.AudioHandler$1.onAudioFocusChange(AudioHandler.java:411)
at android.media.AudioManager$FocusEventHandlerDelegate$1.handleMessage(AudioManager.java:3203)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.os.HandlerThread.run(HandlerThread.java:61)