Map is not showing

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:telerikMap="clr-namespace:Telerik.XamarinForms.Map;assembly=Telerik.Maui.Controls.Compatibility"
             x:Class="MauiApp1.MainPage"
             BackgroundColor="{DynamicResource SecondaryColor}">

    <ScrollView>
        <Grid RowSpacing="25" HorizontalOptions="Fill" BackgroundColor="LightBlue" RowDefinitions="Auto, auto"
              Padding="{OnPlatform iOS='30,60,30,30', Default='20'}">
            <Grid Grid.Row="0" HeightRequest="600" BackgroundColor="Green">
                <telerikMap:RadMap x:Name="map" AutomationId="map">
                    <telerikMap:RadMap.Layers>
                        <telerikMap:ShapefileLayer>
                            <telerikMap:ShapefileLayer.Reader>
                                <telerikMap:MapShapeReader x:Name="reader"/>
                            </telerikMap:ShapefileLayer.Reader>
                        </telerikMap:ShapefileLayer>
                    </telerikMap:RadMap.Layers>
                </telerikMap:RadMap>              
            </Grid>                     
        </Grid>
    </ScrollView>
</ContentPage>

using Telerik.XamarinForms.Map;
using Telerik.XamarinForms.ShapefileReader;

namespace MauiApp1;

public partial class MainPage : ContentPage
{
	public MainPage()
	{	
		InitializeComponent();

		var assembly = this.GetType().Assembly;
		var source = MapSource.FromResource("SDKBrowserMaui.Examples.MapControl.world.shp", assembly);
		this.reader.Source = source;

		Console.WriteLine("Source: " + source + "Reader: " + this.reader);
	}
}