Widget: blog_BlogArticlesByCategory

System.NotImplementedException: The method or operation is not implemented.
   at Realize.SwissCms.Components.ViewComponents.Blog.BlogArticlesByCategoryViewComponent.InvokeAsync(IPageWidget widget) in C:\rdev\realize\swisscms\web\Realize.SwissCms.Components\ViewComponents\Blog\BlogArticlesByCategoryViewComponent.cs:line 53
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsyncCore(ObjectMethodExecutor executor, Object component, ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCoreGeneratedDocument.Views_Shared_Components_Widget_Transparent.ExecuteAsync() in C:\rdev\realize\swisscms\web\Realize.SwissCms.Components\Views\Shared\Components\Widget\Transparent.cshtml:line 7
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCoreGeneratedDocument.Views_Shared_Components_Section_Transparent.ExecuteAsync() in C:\rdev\realize\swisscms\web\Realize.SwissCms.Components\Views\Shared\Components\Section\Transparent.cshtml:line 4