ServiceGate.asmx Implementation

Hello, I have recently been working on the implementation of a customization publication project through the SOAP service type with api/ServiceGate.asmx, I encountered this problem when consuming the endpoint to upload the packages to the platform:

The method is:

private static async Task PublishCustomizationPackage(string packageFilename, string packageName, string url, string username, string password)
        {
            BasicHttpBinding binding = new BasicHttpBinding
            {
                AllowCookies = true,
                Security =
                {
                    Mode = BasicHttpSecurityMode.Transport
                },
                OpenTimeout = new TimeSpan(0, 10, 0),
                SendTimeout = new TimeSpan(0, 10, 0),
                ReceiveTimeout = new TimeSpan(0, 10, 0)
            };

            EndpointAddress address = new EndpointAddress(url + "/api/ServiceGate.asmx");

            var gare = new ServiceGate.ServiceGateSoapClient(binding, address))

            Console.WriteLine($"Logging in to {url}...");
            await gare.LoginAsync(username, password);
            Console.WriteLine($"Uploading package...");
            await gare.UploadPackageAsync(packageName, File.ReadAllBytes(packageFilename), true);
            Console.WriteLine($"Publishing customizations...");
            await gare.PublishPackagesAsync(new string[] { packageName }, true);
            Console.WriteLine($"Logging out...");
            await gare.LogoutAsync();


        }

I would appreciate if someone knows how to fix it.