java.lang.NullPointerException

[allenli0413]

Attempt to invoke virtual method 'java.lang.Object java.lang.ref.WeakReference.get()' on a null object reference
biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.invalidateScrollingChild(ViewPagerBottomSheetBehavior.java:433)
final View scrollingChild = findScrollingChild(mViewRef.get());
mViewRef is null;

[ahsan7766]

I am also getting similiar to this error . No Clue how to resolve this
.
java.lang.NullPointerException:
at android.support.v4.view.ViewCompat.isNestedScrollingEnabled (ViewCompat.java:2480)
at biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.findScrollingChild (ViewPagerBottomSheetBehavior.java:609)
at biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.findScrollingChild (ViewPagerBottomSheetBehavior.java:615)
at biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.findScrollingChild (ViewPagerBottomSheetBehavior.java:622)
at biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.findScrollingChild (ViewPagerBottomSheetBehavior.java:622)
at biz.laenger.android.vpbs.ViewPagerBottomSheetBehavior.onLayoutChild (ViewPagerBottomSheetBehavior.java:252)