Iframe not found issue

[SokyrkaKyrylo]

Since my last issue report I have made some more investigation and now I`m stuck with the next error:

-- The resource cannot be found 404 () Can u please advise what can I do to resolve this one?

[valdisiljuconoks]

Hi,

Do you have your setup code (Startup.cs) at hand?

[wakedupblessed]

Yep, I have it

ConfigureServices method part:

services.AddNotFoundHandler(o =>
    {
        var connectionString = Configuration.GetConnectionString(AppSettingsConstants.EpiserverDbKey);

        o.UseSqlServer(connectionString);
        o.BufferSize = 30;
        o.ThreshHold = 5;
        o.HandlerMode = FileNotFoundMode.On;
        o.IgnoredResourceExtensions = new[] { "jpg", "gif", "png", "css", "js", "ico", "swf", "woff" };
        o.Logging = LoggerMode.On;
        o.LogWithHostname = false;
    });

    services.AddOptimizelyNotFoundHandler(o =>
    {
        o.AutomaticRedirectsEnabled = true;
    });

    Configure method part: 

    app.UseStatusCodePagesWithReExecute("/statuscode/{0}");

    app.UseNotFoundHandler();

 app.UseEndpoints(endpoints =>
    {
        var openIdOptions = app.ApplicationServices.GetRequiredService<IOptions<AuthenticationOptions>>().Value;

        endpoints.MapControllers();

        endpoints.ConfigureRoutes(openIdOptions);

        endpoints.MapContent();

        endpoints.MapRazorPages();
    });