Error executing template "Designs/Core/eCom/ProductCatalog/core-product-details.cshtml"
System.NullReferenceException: Object reference not set to an instance of an object.
   at Core.Extensions.ProductViewModelExtensions.GetVariantCombinationsInAssortment(ProductViewModel productViewModel, Int32 userId)
   at Core.ViewModels.Ecommerce.ProductViewModel.get_ShowAddToCartForm()
   at CompiledRazorTemplates.Dynamic.RazorEngine_215d8c134f3c48a189007502c018e97c.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 ViewModelTemplate<Core.ViewModels.Ecommerce.ProductViewModel>
  2     @using Core.Extensions
  3     @using Dynamicweb.Rendering
  4     @using Core.Services
  5     @using Core.ViewModels.UI
  6     
  7     <product-details class="core-product core-product-details" product-id="@Model.Id" variant-id="@Model.VariantId">
  8     	<div class="row py-5">
  9     		<div class="col-12 mb-5">
 10     			<div class="row">
 11     				<div class="col-12 col-md-6">
 12     					@RenderingService.Instance.PartialView("/eCom/ProductCatalog/partials/core-product-details__images.cshtml", Model)
 13     				</div>
 14     
 15     				<div class="col-12 col-md-6 offset-lg-1 col-lg-5">
 16     
 17     					<div>
 18     
 19     						<div class="small">
 20     
 21     							@if (string.IsNullOrEmpty(Model.Number) == false)
 22     							{
 23     								<p class="text-muted">@Translate("Varenr.") @Model.Number</p>
 24     							}
 25     
 26     							@(new HeadingViewModel()
 27     							{
 28     								Text = Model.Name,
 29     								NodeName = HeadingNodeName.H1,
 30     								DisplayType = HeadingDisplayType.H2
 31     							})
 32     
 33     						</div>
 34     
 35     						<div class="d-flex flex-column gap-3">
 36     
 37     							<div class="small d-flex flex-column gap-3">
 38     								@Model.LongDescription
 39     
 40     								@RenderingService.Instance.PartialView("/eCom/ProductCatalog/partials/core-product-details__specifications.cshtml", Model)
 41     
 42     								@if (Model.ShowStock == true)
 43     								{
 44     									@Model.RenderedHtml.Stock
 45     								}
 46     
 47     								@if (Model.ShowPrice == true)
 48     								{
 49     									<div class="core-product__price">
 50     										@(new HeadingViewModel()
 51     										{
 52     											Text = Model.Price.Render(),
 53     											NodeName = HeadingNodeName.P,
 54     											DisplayType = HeadingDisplayType.H3
 55     										})
 56     									</div>
 57     								}
 58     							</div>
 59     
 60     							@if (Model.ShowAddToCartForm == true || Model.ShowVariantSelector == true)
 61     							{
 62     								@Model.RenderedHtml.AddToCart
 63     							}
 64     						</div>
 65     					</div>
 66     
 67     				</div>
 68     			</div>
 69     		</div>
 70     
 71     		<div class="col-12 mb-5">
 72     			@RenderingService.Instance.PartialView("/eCom/ProductCatalog/partials/core-product-details__related-products.cshtml", Model)
 73     		</div>
 74     
 75     	</div>
 76     </product-details>
 77     @AssetService.Instance.GetJavascript("03-ecommerce/product-details.mjs")
 78     
 79     <script type="application/ld+json">
 80     
 81     	@{
 82     		Uri uri = Dynamicweb.Context.Current.Request.Url;
 83     		string domain = uri.GetLeftPart(UriPartial.Authority);
 84     
 85     		var jsonLd = new
 86     		{
 87     			context = "https://schema.org/",
 88     			type = "Product",
 89     			name = Model.Name,
 90     			image = domain + Model.DefaultImage?.Value,
 91     			description = Model.LongDescription ?? Model.ShortDescription,
 92     			sku = Model.Number,
 93     			url = Model.Link,
 94     			offers = new
 95     			{
 96     				type = "Offer",
 97     				priceCurrency = Model.Price.CurrencyCode,
 98     				price = Model.Price.Price,
 99     				availability = "https://schema.org/" + (Model.IsInStock ? "InStock" : "OutOfStock"),
100     				url = domain + Model.Link
101     			}
102     		};
103     		var jsonString = System.Text.Json.JsonSerializer.Serialize(jsonLd);
104     	}
105     	@Raw(jsonString)
106     	
107     </script>
108