Fatal Exception: java.lang.IllegalArgumentException parameter must be a descendant of this view about slidingrootnav

[theoyuncu8]

android.view.ViewGroup.offsetRectBetweenParentAndChild (ViewGroup.java:6351)
android.view.ViewGroup.offsetDescendantRectToMyCoords (ViewGroup.java:6280)
androidx.core.widget.NestedScrollView.isWithinDeltaOfScreen (NestedScrollView.java:1580)
androidx.core.widget.NestedScrollView.onSizeChanged (NestedScrollView.java:2135)
android.view.View.sizeChange (View.java:23223)
android.view.View.setFrame (View.java:23173)
android.view.View.layout (View.java:23030)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild (HeaderScrollingViewBehavior.java:149)
com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild (ViewOffsetBehavior.java:43)
androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout (CoordinatorLayout.java:918)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.RelativeLayout.onLayout (RelativeLayout.java:1103)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
androidx.constraintlayout.widget.ConstraintLayout.onLayout (ConstraintLayout.java:1873)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
com.example.slidingrootnav.SlidingRootNavLayout.onLayout (SlidingRootNavLayout.java:101) // Hi there!!!!
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.LinearLayout.setChildFrame (LinearLayout.java:1829)
android.widget.LinearLayout.layoutVertical (LinearLayout.java:1673)
android.widget.LinearLayout.onLayout (LinearLayout.java:1582)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.LinearLayout.setChildFrame (LinearLayout.java:1829)
android.widget.LinearLayout.layoutVertical (LinearLayout.java:1673)
android.widget.LinearLayout.onLayout (LinearLayout.java:1582)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.widget.FrameLayout.layoutChildren (FrameLayout.java:332)
android.widget.FrameLayout.onLayout (FrameLayout.java:270)
com.android.internal.policy.DecorView.onLayout (DecorView.java:804)
android.view.View.layout (View.java:23033)
android.view.ViewGroup.layout (ViewGroup.java:6468)
android.view.ViewRootImpl.performLayout (ViewRootImpl.java:3601)
android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:3069)
android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:2070)
android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:8402)
android.view.Choreographer$CallbackRecord.run (Choreographer.java:1058)
android.view.Choreographer.doCallbacks (Choreographer.java:880)
android.view.Choreographer.doFrame (Choreographer.java:813)
android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:1043)
android.os.Handler.handleCallback (Handler.java:938)
android.os.Handler.dispatchMessage (Handler.java:99)
android.os.Looper.loop (Looper.java:236)
android.app.ActivityThread.main (ActivityThread.java:8037)
java.lang.reflect.Method.invoke (Method.java)
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:656)
com.android.internal.os.ZygoteInit.main (ZygoteInit.java:967)

[theoyuncu8]

@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    if (getChildCount() == 0) {
        addView(rootView);
    }
    for (int i = 0; i < getChildCount(); i++) {
        View child = getChildAt(i);
        if (child == rootView) {
            int rootLeft = positionHelper.getRootLeft(dragProgress, maxDragDistance);
            child.layout(rootLeft, top, rootLeft + (right - left), bottom);   // 101. line
        } else {
            child.layout(left, top, right, bottom);
        }
    }
}

[theoyuncu8]

@yarolegovich Please help me!