Owin New Project wirft NullRreference aus ⇐ C#

[Anonymous]

neues Dotnet -Core -Projekt mit nur einer Quellcodedatei < /p>

Code: Select all

> dotnet run
Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Owin.Hosting.Utilities.SettingsLoader.FromConfigImplementation..ctor()
at Microsoft.Owin.Hosting.Utilities.SettingsLoader.c.b__1_0()
at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Func`1 valueFactory)
at Microsoft.Owin.Hosting.Utilities.SettingsLoader.LoadFromConfig(IDictionary`2 settings)
at Microsoft.Owin.Hosting.Engine.StartContext..ctor(StartOptions options)
at Microsoft.Owin.Hosting.Starter.DirectHostingStarter.Start(StartOptions options)
at Microsoft.Owin.Hosting.Starter.HostingStarter.Start(StartOptions options)
at TestProgram.Program.Main(String[] args) in
...\Program.cs:line 13
< /code>

using Microsoft.Owin.Hosting;
using Owin;

namespace TestProgram
{
class Startup {
public void Configuration(IAppBuilder builder) { }
}
class Program
{
static void Main(string[] args)
{
using (WebApp.Start("http://127.0.0.1:3000")) { }
}
}
}