React native for windows doesn't handle exception on native modules

Question

i'm trying to handle an exception from native module in react native for windows, i,ve written the native module following the react native for windows docs but when i trigger an error in the native module, i expect the function App_UnhandledException or TaskScheduler_UnobservedTaskException catch the exception but it doesn't.

Are they any way to catch the exception from native modules?

App.xaml.cs

using Microsoft.ReactNative;
using System.Diagnostics;
using System.Threading.Tasks;
using Windows.ApplicationModel.Activation;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;

namespace testprojecthandlederrors
{
sealed partial class App : ReactApplication
{
    public App()
    {
   #if BUNDLE
        JavaScriptBundleFile = "index.windows";
        InstanceSettings.UseWebDebugger = false;
        InstanceSettings.UseFastRefresh = false;
#else
        JavaScriptBundleFile = "index";
        InstanceSettings.UseWebDebugger = true;
        InstanceSettings.UseFastRefresh = true;
#endif

#if DEBUG
        InstanceSettings.UseDeveloperSupport = true;
#else
        InstanceSettings.UseDeveloperSupport = false;
#endif

        Microsoft.ReactNative.Managed.AutolinkedNativeModules.RegisterAutolinkedNativeModulePackages(PackageProviders); // Includes any autolinked modules

        PackageProviders.Add(new Microsoft.ReactNative.Managed.ReactPackageProvider());
        PackageProviders.Add(new ReactPackageProvider());
        this.UnhandledException += App_UnhandledException;
        TaskScheduler.UnobservedTaskException += TaskScheduler_UnobservedTaskException;
        InitializeComponent();
    }

    private void TaskScheduler_UnobservedTaskException(object sender, UnobservedTaskExceptionEventArgs e)
    {
        var e_message = e.Exception.Message;
        Debug.WriteLine("Error Detected from Another thread", e_message);
    }

    private void App_UnhandledException(object sender, UnhandledExceptionEventArgs e)
    {
        var e_message = e.Exception.Message;
        Debug.WriteLine("Error Detected from Main thread", e_message);
    }

    /// <summary>
    /// Invoked when the application is launched normally by the end user.  Other entry points
    /// will be used such as when the application is launched to open a specific file.
    /// </summary>
    /// <param name="e">Details about the launch request and process.</param>
    protected override void OnLaunched(LaunchActivatedEventArgs e)
    {
        base.OnLaunched(e);
        var frame = (Frame)Window.Current.Content;
        frame.Navigate(typeof(MainPage), e.Arguments);
    }



    /// <summary>
    /// Invoked when the application is activated by some means other than normal launching.
    /// </summary>
    protected override void OnActivated(IActivatedEventArgs e)
    {
        var preActivationContent = Window.Current.Content;
        base.OnActivated(e);
        if (preActivationContent == null && Window.Current != null)
        {
            // Display the initial content
            var frame = (Frame)Window.Current.Content;
            frame.Navigate(typeof(MainPage), null);
        }
    }
}
}

CustomModule.cs

using Microsoft.ReactNative.Managed;

namespace testprojecthandlederrors
{
[ReactModule]
class CustomModule
{
    [ReactMethod("saveImage")]
    public void SaveImage(string base64)
    {
       //Throw error
       var base64String = base64.Replace("data:image/png;base64,", string.Empty);
    }
}
}

App.js

...
const testException = () => {
  NativeModules.CustomModule.saveImage();
}
...