Asp.net web api 当从本地主机加载数据时，类型提供程序将挂起应用程序

我有理由相信我正在使用的类型提供程序正在挂起我在Android emulator上运行的应用程序

在Xamarin.Forms应用程序的主页上，我有以下加载操作：

protected override void OnAppearing()
{
    _viewModel.Load();
    return; // Never gets reached when using Type Provider...
}

public void Load() => Cars = new ObservableCollection<Car>(getCars());

open FSharp.Data

// https://forums.xamarin.com/discussion/1199/how-to-make-our-remote-host-127-0-0-1-reachable-from-android-device-monoandroid-using-vs2010
[<Literal>]      (* "10.0.2.2" is the workaround IP address for local host *)
let JsonPathDesignTime = "http://localhost:48213/api/cars"
let JsonPathRunTime =    "http://10.0.2.2:48213/api/cars"
type Repository =         JsonProvider<JsonPathDesignTime>

type Car = { Make:string ; Model:string }

let getCars() =

    try
        Repository.Load JsonPathRunTime
        |> Array.toSeq
        |> Seq.map(fun x -> { Make=x.Make ; Model=x.Model })

    with error -> failwith error.Message

My viewmodel具有以下加载操作：

protected override void OnAppearing()
{
    _viewModel.Load();
    return; // Never gets reached when using Type Provider...
}

public void Load() => Cars = new ObservableCollection<Car>(getCars());

open FSharp.Data

// https://forums.xamarin.com/discussion/1199/how-to-make-our-remote-host-127-0-0-1-reachable-from-android-device-monoandroid-using-vs2010
[<Literal>]      (* "10.0.2.2" is the workaround IP address for local host *)
let JsonPathDesignTime = "http://localhost:48213/api/cars"
let JsonPathRunTime =    "http://10.0.2.2:48213/api/cars"
type Repository =         JsonProvider<JsonPathDesignTime>

type Car = { Make:string ; Model:string }

let getCars() =

    try
        Repository.Load JsonPathRunTime
        |> Array.toSeq
        |> Seq.map(fun x -> { Make=x.Make ; Model=x.Model })

    with error -> failwith error.Message