Unable to debug Blazor hosted webassembly 3.2.0 from Visual Studio 2019 16.6.2

Question

I have Visual Studio 2019 16.6.2 installed, along with the .NET Core 3.1.301 SDK and all the necessary Blazor templates.

If I create a brand new Blazor WebAssmbly app

Answer 1

This sounds extremely naïve but this was the entire problem for me. I didn't notice this line was removed in the diff.

Make sure your main builds and runs the CreateHostBuilder function.

This unfortunately causes the same error above but is not at all directly related.

public static void Main(string[] args)
{
    CreateHostBuilder(args).Build().Run();
}
...
public static IHostBuilder CreateHostBuilder(string[] args)
...