Binding Errors caused by Scrollbar in ScrollbarMvvmAxis example

I was playing with the example “ScrollbarMvvmAxis”. This project is in “SciChart.Wpf.Examples-master\Sandbox\CustomerExamples\ScrollbarMvvmAxis”. I noticed that it produced a binding error in both output window and Xaml Binding Window. The error read “System.Windows.Data Error: 4 : Cannot find source for binding with reference ‘RelativeSource FindAncestor, AncestorType=’SciChart.Charting.Visuals.SciChartScrollbar’, AncestorLevel=’1”. BindingExpression:Path=Orientation; DataItem=null; target element is ‘Line’ (Name=”); target property is ‘Visibility’ (type ‘Visibility’)”. Checked the code in the project and didn’t see binding related to this. It must be in the library itself. Anyone knows what could be it?

Thanks