hii :-)

Umbraco 9.5 .Net Core

i installed UrlTracker v9 and configured it and now i getting NullReferenceException: Object reference not set to an instance of an object.

anyone know why?

Startup.cs:

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseUmbraco()
                .WithMiddleware(u =>
                {

                    u.UseBackOffice();
                    u.UseWebsite();
                    u.UseUrlTracker();
                })
                .WithEndpoints(u =>
                {
                    u.UseInstallerEndpoints();
                    u.UseBackOfficeEndpoints();
                    u.UseWebsiteEndpoints();
                });
        }

appsettings.json:

"UrlTracker": {
        "IsDisabled": false,
        "IsTrackingDisabled": false,
        "LoggingEnabled": false,
        "IsNotFoundTrackingDisabled": false,
        "AppendPortNumber": false,
        "HasDomainOnChildNode": false,
        "CacheRegexRedirects": true,
        "InterceptSlidingCacheMinutes": 2880,
        "MaxCachedIntercepts": 5000,
        "EnableInterceptCaching": true
      }