I've got a custom Authentication module put together for two of our partner sites
Error    CS0121    The call is ambiguous between the following methods or properties: 'Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService<T>(System.IServiceProvider)' and 'Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService<T>(System.IServiceProvider)'    Smithbucklin.Modules.AuthenticationRhythm    D:\Dev\smithbucklin.DNNAuth\source-code\Modules\Authentication_Partner\Login.ascx.cs

that's preventing my module from building.

I know it's tied to a library that just isn't right and was looking for where to hunt to resolve this issue.

It's happeninng here in my base code which is part of DNN base code.

        private static readonly ILog Logger = LoggerSource.Instance.GetLogger(typeof(Login));
        private readonly INavigationManager _navigationManager;

        public Login()
        {
            this._navigationManager = this.DependencyProvider.GetRequiredService<INavigationManager>();
        }