Blazor windows forms error showing problem

part of my Program.cs for loading Form1 that loads webview:

var host = Host.CreateDefaultBuilder(null)    .ConfigureWebHostDefaults(webBuilder =>    {        webBuilder.UseStartup<Startup>()        .UseSetting(WebHostDefaults.DetailedErrorsKey, "true"); // detailed errors        webBuilder.UseUrls("http://*:5000;http://localhost:5000;https://localhost:5001;");        webBuilder.UseWebRoot("wwwroot");                    })    .ConfigureHostConfiguration(configHost =>    {        configHost.SetBasePath(Directory.GetCurrentDirectory());    })    .Build();        host.StartAsync();        ServiceProvider = host.Services;var form1 = ServiceProvider.GetRequiredService<Form1>();        Application.Run(form1);   host.StopAsync();

with this, when any error occures in Blazor, the error location in .razor file not showing and the form1 is not accessible so that I use F12 console for error descriptions.

The Visual studio stops at line: Application.Run(form1); and shows me a general error, like null reference exception. How to make error reporting as normal?