Error executing template "/Designs/Swift-v2/Paragraph/Custom_Swift-v2_ProductHeader.cshtml"
System.NullReferenceException: Object reference not set to an instance of an object.
   at CompiledRazorTemplates.Dynamic.RazorEngine_36a0ef175f814296a16d84c85bc4a5ab.ExecuteAsync()
   at RazorEngine.Templating.TemplateBase.Run(ExecuteContext context, TextWriter reader)
   at RazorEngine.Templating.RazorEngineCore.RunTemplate(ICompiledTemplate template, TextWriter writer, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.DynamicWrapperService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService service, String name, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass23_0.<Run>b__0(TextWriter writer)
   at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
   at RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService service, String name, Type modelType, Object model, DynamicViewBag viewBag)
   at Dynamicweb.Rendering.RazorTemplateRenderingProvider.Render(Template template)
   at Dynamicweb.Rendering.TemplateRenderingService.Render(Template template)
   at Dynamicweb.Rendering.Template.RenderRazorTemplate()


  1     @inherits Dynamicweb.Rendering.ViewModelTemplate<Dynamicweb.Frontend.ParagraphViewModel>
@using Dynamicweb.Ecommerce.ProductCatalog
@{
    ProductViewModel product = null;
    if (Dynamicweb.Context.Current.Items.Contains("ProductDetails"))
    {
        product = (ProductViewModel)Dynamicweb.Context.Current.Items["ProductDetails"];
    }
    else if (!string.IsNullOrEmpty(Pageview.Page.Item["DummyProduct"]?.ToString()) && Pageview.IsVisualEditorMode)
    {
        var pageViewModel = Dynamicweb.Frontend.ContentViewModelFactory.CreatePageInfoViewModel(Pageview.Page);
        ProductListViewModel productList = pageViewModel.Item.GetValue("DummyProduct") != null ? pageViewModel.Item.GetValue("DummyProduct") as ProductListViewModel : new ProductListViewModel();
        if (productList?.Products is object)
        {
            product = productList.Products[0];
        }
    }
    else if (Pageview.IsVisualEditorMode)
    {
        product = new ProductViewModel();
        product.Name = Translate("My product");
        product.Number = "12345";
    }
    string manufacturer = null;
    if (product?.ProductFields != null && product.ProductFields.TryGetValue("ManufacturerField", out var fv))
    {
        manufacturer = fv?.Value?.ToString();
    }
    if (string.IsNullOrWhiteSpace(manufacturer) && Pageview.IsVisualEditorMode)
    {
        manufacturer = Translate("Manufacturer");
    }
    //Marked Products
    string markedItem = string.Empty;
    bool isPunchoutUser = false;
    FieldValueViewModel specPrice;
    bool hasSpecPrice = false;
    if (!Pageview.IsVisualEditorMode && Pageview.User != null)
    {
        isPunchoutUser = Pageview.User.CustomFieldValues.SingleOrDefault(x => x.CustomField.SystemName == "AccessUser_IsPunchoutUser").Value.ToString().Equals("True");
        hasSpecPrice = product.ProductFields.TryGetValue("SpecPrice", out specPrice);
        markedItem = specPrice != null && specPrice.Value.ToString() == "yes" && isPunchoutUser ? "markeditem" : "";
    }
    string lastPurchaseDate = null;
    if (product?.ProductFields != null && product.ProductFields.TryGetValue("LastPurchaseDate", out var fvDate))
    {
        lastPurchaseDate = fvDate?.Value?.ToString();
    }
    if (string.IsNullOrWhiteSpace(lastPurchaseDate) && Pageview.IsVisualEditorMode)
    {
        lastPurchaseDate = Translate("01-01-2025");
    }
    string lastPurchaseQuantity = null;
    if (product?.ProductFields != null && product.ProductFields.TryGetValue("LastPurchaseQuantity", out var fvQty))
    {
        lastPurchaseQuantity = fvQty?.Value?.ToString();
    }
    if (string.IsNullOrWhiteSpace(lastPurchaseQuantity) && Pageview.IsVisualEditorMode)
    {
        lastPurchaseQuantity = "10";
    }
    string clickProductLink = "";
    if (Pageview.IsVisualEditorMode)
    {
        clickProductLink = "";
    }
    else
    {
        clickProductLink = "onclick=\"return clickProductLink('" + @product.Id + "', '" + @product.Name + "', '" + @product.VariantName + "', '" + @product.Price.CurrencyCode + "', '" + @product.Price.ToStringInvariant() + "', '" + @product.Discount.ToStringInvariant() + "')\"";
    }
    string link = product.GetProductLink(GetPageIdByNavigationTag("Shop"), false);
    if (!Pageview.IsVisualEditorMode)
    {
        string ReplacementProduct = !string.IsNullOrEmpty(product.ReplacementProduct.ProductId) ? product.ReplacementProduct.GetProduct().GetProductLink(GetPageIdByNavigationTag("Shop"), false) : "";
        link = !string.IsNullOrEmpty(ReplacementProduct) ? ReplacementProduct : link;
    }
}
<div class="position-relative">
    <a href="@link" class="stretched-link" onmouseover="swift.Image.swapImage(event)" onmouseout="swift.Image.swapImage(event)" @clickProductLink>
        <span class="visually-hidden">@product.Name</span>
    </a>
    <script>
        function clickProductLink(productId, productName, productVariant, productCurrency, productPrice, productDiscount) {
            if (typeof gtag !== "undefined") {
                gtag("event", "select_item", {
                    item_list_id: "product_list_item_repeater",
                    item_list_name: "Product list (Item Repeater)",
                    items: [
                        {
                            item_id: productId,
                            item_name: productName,
                            currency: productCurrency,
                            item_list_id: "product_list_item_repeater",
                            item_list_name: "Product list (Item Repeater)",
                            item_variant: productVariant,
                            price: productPrice,
                            discount: productDiscount
                        }
                    ]
                });
            }
        }
    </script>
    @if (product is object)
    {
        string titleFontSize = Model.Item.GetRawValueString("FontSize", "fs-6");
        string horizontalAlign = Model.Item.GetRawValueString("HorizontalAlignment", "");
        horizontalAlign = horizontalAlign == "center" ? "text-center" : horizontalAlign;
        horizontalAlign = horizontalAlign == "end" ? "text-end" : horizontalAlign;
        string headingLevel = Model.Item.GetString("HeadingLevel", "h2");
        string headingLevelStart = $"<{headingLevel} class=\"{titleFontSize} {horizontalAlign} {markedItem} fw-bold m-0 item_{Model.Item.SystemName.ToLower()}\" itemprop=\"name\">";
        string headingLevelStop = $"</{headingLevel}>";
        @headingLevelStart
        @product.Name
        @headingLevelStop
        <span class="fs-7 opacity-85 @horizontalAlign fw-bold">
            @product.Number
            @if (!string.IsNullOrWhiteSpace(manufacturer))
            {
                @($" Producent: {manufacturer}")
            }
        </span>
        @if (!string.IsNullOrWhiteSpace(lastPurchaseDate) || !string.IsNullOrWhiteSpace(lastPurchaseQuantity))
        {
            <span class="fs-7 opacity-85 @horizontalAlign d-block fw-bold">
                @Translate("Last purchase"): @lastPurchaseDate, @Translate("Quantity"): @lastPurchaseQuantity
            </span>
        }
    }
</div>