I would like to present to the user 'Related Products' in ProductDetail display template right above tabs with product description etc. How can I achieve this?

For testing, I am trying something like this, but I am encountering a ‘Null reference exception’.

                <div class="rvdsf-field-description-container col-sm-12">

                    <b>--Insert Showcase here--</b>

                    @{

                        var _showCaseViewModel = new ProductShowcaseViewModel();

                        _showCaseViewModel.Cart = Model.Cart;

                        _showCaseViewModel.Checkout = Model.Checkout;

                        _showCaseViewModel.DisplayEffect =  ProductShowcaseDisplayEffectType.AutomaticAdvance;

                        _showCaseViewModel.ProductID = Model.Product.ProductID;

                        _showCaseViewModel.Products = new List<ProductModel>();

                        _showCaseViewModel.FrameDuration = 50;

                        _showCaseViewModel.Height = "100";

                        _showCaseViewModel.VisibleMaxItems = 3;

                        _showCaseViewModel.Width = "300";

                        _showCaseViewModel.WrapFrames = true;

                    }

                    @RenderPage("~/DesktopModules/Revindex.Dnn.RevindexStorefront/Portals/_default/Display/ProductShowcase/StandardCarousel/Display.cshtml", _showCaseViewModel)

                </div>

                <div class="rvdsf-field-description-container col-sm-12">

                    <ul id="rvdsfProductDetailDescriptionTabs" class="nav nav-tabs hidden-xs d-none d-sm-flex">

Exception:

System.NullReferenceException: Object reference not set to an instance of an object.

   at Revindex.Dnn.RevindexStorefront.Views.ProductShowcaseWebViewPage`1.InitializePage()

   --- End of inner exception stack trace ---

   at Revindex.Dnn.RevindexStorefront.Views.ProductShowcaseWebViewPage`1.InitializePage()

   at System.Web.WebPages.WebPageBase.PushContext(WebPageContext pageContext, TextWriter writer)

   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)

   at System.Web.WebPages.WebPageBase.<>c__DisplayClass40_0.<RenderPageCore>b__0(TextWriter writer)

   at System.Web.WebPages.WebPageBase.Write(HelperResult result)

   at ASP._Page_DesktopModules_Revindex_Dnn_RevindexStorefront_Portals__default_Display_ProductDetail_Ath2024_Display_cshtml.Execute() in c:\home\site\wwwroot\DesktopModules\Revindex.Dnn.RevindexStorefront\Portals\_default\Display\ProductDetail\Ath2024\Display.cshtml:line 807

   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()

   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)

   at DotNetNuke.Web.Razor.RazorEngine.Render(TextWriter writer)