I'm getting a .NET MAUI converter error

"Converter failed to convert value of type 'Windows.Foundation.IReference`1<Microsoft.UI.Xaml.GridLength>' to type 'Double'; BindingExpression: Path='TemplateSettings.CompactPaneGridLength' DataItem='Microsoft.UI.Xaml.Controls.SplitView'; target element is 'Microsoft.UI.Xaml.Media.Animation.SplineDoubleKeyFrame' (Name='null'); target property is 'Value' (type 'Double')." I encounter this error when trying to pull data from ViewModels into my XAML file. I have three ViewModels, all inheriting from a BaseViewModel. Since I need to retrieve data from all three ViewModels in a single XAML page, I created a ParentViewModel and referenced it in the page. However, when I navigate to that page, I get this error.