Console application using .net 8.0 to connect to sharepoint online

[mvcsharepointdev]

I have this console application to connect to sharepoint online using clientID,TenantID & Certificate:-

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using PnP.Core.Auth;
using PnP.Core.Services;
using PnP.Core.Services.Builder.Configuration;
using System.Security.Cryptography.X509Certificates;

class Program
{
    static async Task Main(string[] args)
    {
        var tenantId = "b**c";
        var clientId = "7***9";
        var certificateThumbprint = "3***7";
        var certificatePath = @"c:\Cert\DashBoardIntegration.pfx";
        var siteUrl = "https://***.sharepoint.com/sites/PPM";
        var certificatePassword = "****";

        var certificate = LoadCertificateFromFile(certificatePath, certificatePassword);

        var serviceCollection = new ServiceCollection();
        ConfigureServices(serviceCollection, clientId, tenantId, certificate, siteUrl);

        var serviceProvider = serviceCollection.BuildServiceProvider();
        var pnpContextFactory = serviceProvider.GetRequiredService<IPnPContextFactory>();

        using (var context = await pnpContextFactory.CreateAsync(new Uri(siteUrl)))
        {
            // Example SharePoint operation
        }
    }

    static X509Certificate2 LoadCertificateFromFile(string certificatePath, string certificatePassword)
    {
        return new X509Certificate2(certificatePath, certificatePassword, X509KeyStorageFlags.MachineKeySet |
                                    X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
    }

    static void ConfigureServices(IServiceCollection services, string clientId, string tenantId, X509Certificate2 certificate, string siteUrl)
    {
        services.AddLogging(configure => configure.AddConsole())
                .AddPnPCore(options =>
                {
                    options.Sites.Add("DefaultSite", new PnPCoreSiteOptions
                    {
                        SiteUrl = siteUrl,
                        AuthenticationProvider = new X509CertificateAuthenticationProvider(clientId, tenantId, certificate)
                    });
                });
    }
}

but i am getting this error:-

any advice? i have the certificate as self-signed certificate and it is installed inside the local server.

[wizofaus]

So pass one in as the second parameter, I already told you that in your other question on this board. I'm not sure how that "DefaultSite" options stuff even works, but I wouldn't rely on it.

[jansenbe]

@mvcsharepointdev : see https://github.com/pnp/pnpcore/blob/dev/docs/polyglot/Getting%20started%20-%20application%20permissions.ipynb