Error executing template "Designs/Swift-v2/Paragraph/Swift-v2_BreadcrumbNavigation/Plain.cshtml"
System.ArgumentException: An item with the same key has already been added. Key: GROUP490
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at Dynamicweb.Ecommerce.Shops.Shop.GetTopLevelGroups(String languageId)
   at Dynamicweb.Ecommerce.Frontend.Navigation.GroupNavigationTreeNodeProvider.GetGroupsBySettings(PageNavigationSettings ecomSettings)
   at Dynamicweb.Ecommerce.Frontend.Navigation.GroupNavigationTreeNodeProvider.GetNodes(NavigationContext context, NavigationSettings settings, NavigationTreeNode parent)
   at System.Linq.Enumerable.SelectManySingleSelectorIterator`2.MoveNext()
   at System.Linq.Enumerable.TryGetFirst[TSource](IEnumerable`1 source, Func`2 predicate, Boolean& found)
   at Dynamicweb.Frontend.Navigation.NavigationService.FilterNodesByExpandMode(NavigationContext context, NavigationSettings settings, NavigationTreeNode parent, IEnumerable`1 nodes, Int32 nodesLevel)
   at Dynamicweb.Frontend.Navigation.NavigationService.GetNavigationNodes(NavigationContext context, NavigationSettings settings, NavigationTreeNode parent)
   at Dynamicweb.Frontend.Navigation.NavigationTreeNodeViewModel.get_Nodes()
   at CompiledRazorTemplates.Dynamic.RazorEngine_93626792f2a14fa589247cdc2828651a.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>
  2     @using Dynamicweb.Frontend.Navigation
  3     
  4     @{
  5         var navigationSettings = new NavigationSettings();
  6         navigationSettings.IncludeFoldersAndHidden = true;
  7         navigationSettings.ExpandMode = ExpandMode.PathOnly;
  8     
  9         NavigationTreeViewModel navigationModel = Navigation.GetNavigationViewModel(navigationSettings);
 10     }
 11     
 12     @if (navigationModel.Nodes.Count() > 0)
 13     {
 14     	string menuId = "menu_breadcrumb";
 15     	bool showProductInBreadcrumb = Model.Item.GetBoolean("ShowProductInBreadcrumb");
 16     	var breadCrumbNavigationTree = new Stack<Dynamicweb.Frontend.Navigation.NavigationTreeNodeViewModel>(navigationModel.Nodes);
 17     
 18     	<ol class="breadcrumb small mb-0 @menuId">
 19     		@while (breadCrumbNavigationTree.Count > 0)
 20     		{
 21     			var currentNode = breadCrumbNavigationTree.Pop();
 22     			if (currentNode.ShowInBreadcrumb)
 23     			{
 24     				if (!string.IsNullOrEmpty(currentNode.Link))
 25     				{
 26     					<li class="breadcrumb-item">
 27     						<a href="@currentNode.Link">
 28     							@currentNode.Name
 29     						</a>
 30     					</li>
 31     				}
 32     				else
 33     				{
 34     					<li class="breadcrumb-item">
 35     						@currentNode.Name
 36     					</li>
 37     				}
 38     			}
 39     			foreach (var nextNode in currentNode.Nodes)
 40     			{
 41     				breadCrumbNavigationTree.Push(nextNode);
 42     			}
 43     		}
 44     
 45     		@if (showProductInBreadcrumb && !string.IsNullOrEmpty(Dynamicweb.Context.Current?.Request.QueryString["ProductID"]))
 46     		{
 47     			string productid = Dynamicweb.Context.Current?.Request.QueryString["ProductID"] ?? string.Empty;
 48     			string variantid = Dynamicweb.Context.Current?.Request.QueryString["VariantID"] ?? string.Empty;
 49     			var product = Dynamicweb.Ecommerce.Services.Products.GetProductById(productid, variantid, Dynamicweb.Ecommerce.Common.Context.LanguageID);
 50     			if (product != null)
 51     			{
 52     				<li class="breadcrumb-item">
 53     					@product.Name
 54     				</li>
 55     			}
 56     		}
 57     	</ol>
 58     }
 59     else if (Pageview.IsVisualEditorMode)
 60     {
 61     	<div class="alert alert-dark m-0" role="alert">
 62     		<span>@Translate("Breadcrumb navigation: The navigation will be shown here, if any")</span>
 63     	</div>
 64     }
 65