Cannot convert from int to System.Timespan

using Plugin.Geolocator;
using Plugin.Geolocator.Abstractions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace tra
{
public partial class MapPage : ContentPage
{

    public MapPage()
    {
        InitializeComponent();

    }
    protected async override void OnAppearing()
    {
        base.OnAppearing();

        var locator = CrossGeolocator.Current;
        locator.PositionChanged += Locator_PositionChanged;
        await locator.StartListeningAsync(0, 100);

        var position = await locator.GetPositionAsync();

        var center = new Xamarin.Forms.Maps.Position(position.Latitude, position.Longitude);
        var span = new Xamarin.Forms.Maps.MapSpan(center, 2, 2);
        locationsMap.MoveToRegion(span);
    }

    private void Locator_PositionChanged(object sender, Plugin.Geolocator.Abstractions.PositionEventArgs e)
    {
        var center = new Xamarin.Forms.Maps.Position(e.Position.Latitude, e.Position.Longitude);
        var span = new Xamarin.Forms.Maps.MapSpan(center, 2, 2);
        locationsMap.MoveToRegion(span);
    }
}

}