Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.Handler.postDelayed(java.lang.Runnable, long)' on a null object reference
       at dji.ux.internal.CrossHair$AnimListener.onAnimationEnd(Unknown Source)
       at android.animation.AnimatorSet$AnimatorSetListener.onAnimationEnd(AnimatorSet.java:854)
       at android.animation.ValueAnimator.endAnimation(ValueAnimator.java:1171)
       at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:722)
       at android.animation.ValueAnimator$AnimationHandler.run(ValueAnimator.java:738)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
       at android.view.Choreographer.doCallbacks(Choreographer.java:580)
       at android.view.Choreographer.doFrame(Choreographer.java:549)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
       at android.os.Handler.handleCallback(Handler.java:739)
       at android.os.Handler.dispatchMessage(Handler.java:95)
       at android.os.Looper.loop(Looper.java:135)
       at android.app.ActivityThread.main(ActivityThread.java:5282)
       at java.lang.reflect.Method.invoke(Method.java)
       at java.lang.reflect.Method.invoke(Method.java:372)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:966)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)