问Swagger文档有空路径

EN

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContext<APIContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
        services.AddControllersWithViews();
        services.AddSwaggerGen(c =>
        {
            c.SwaggerDoc("v1", new OpenApiInfo
            {
                Version = "v1",
                Title = "OpenWeb Challenge",
                Description = "A 'simple' example ASP.NET Core Web API",
                TermsOfService = new Uri("https://example.com/terms"),
                Contact = new OpenApiContact
                {
                    Name = "Anthony Da Silva Ferreira",
                    Email = string.Empty,
                    Url = new Uri("https://twitter.com/spboyer"),
                }
            });

            var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
            var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
            c.IncludeXmlComments(xmlPath);
        });
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        app.UseSwagger();
        app.UseSwaggerUI(c =>
        {
            c.SwaggerEndpoint("/swagger/v1/swagger.json", "OpenWebChallenge V1");
        });
        app.UseHttpsRedirection();
        app.UseStaticFiles();
        app.UseRouting();
        app.UseAuthorization();
        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllerRoute(name: "default",pattern: "{controller=Home}/{action=Index}/{id?}");
        });
    }

{
  "openapi": "3.0.1",
  "info": {
    "title": "OpenWeb Challenge",
    "description": "A 'simple' example ASP.NET Core Web API",
    "termsOfService": "https://example.com/terms",
    "contact": {
      "name": "Anthony Da Silva Ferreira",
      "url": "https://twitter.com/spboyer",
      "email": ""
    },
    "license": {
      "name": "Licence",
      "url": "https://example.com/license"
    },
    "version": "v1"
  },
  "paths": { },
  "components": { }
}

public class ContactsController : Controller
{
    private readonly APIContext _context;

    public ContactsController(APIContext context)
    {
        _context = context;
    }

    // GET: Contacts
    public async Task<IActionResult> Index()
    {
        return View(await _context.Contacts.ToListAsync());
    }

    // GET: Contacts/Details/5
    public async Task<IActionResult> Details(int? id)
    {
        if (id == null)
        {
            return NotFound();
        }

        var contact = await _context.Contacts
            .Include(c => c.ContactSkills)
                .ThenInclude(cs => cs.Skill)
            .AsNoTracking()
            .FirstOrDefaultAsync(m => m.Id == id);

        if (contact == null)
        {
            return NotFound();
        }

        return View(contact);
    }
}