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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: GROUP445
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at Dynamicweb.Ecommerce.Products.GroupRelation.GetGroupRelationsByChildId(String childId)
   at Dynamicweb.Ecommerce.Products.GroupExtensions.IsTopGroup(Group group)
   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_2f418c7ebf074c67ae92fd7d5e4fecb2.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.Frontend.Navigation
@{
    var navigationSettings = new NavigationSettings();
    navigationSettings.IncludeFoldersAndHidden = true;
    navigationSettings.ExpandMode = ExpandMode.PathOnly;
    NavigationTreeViewModel navigationModel = Navigation.GetNavigationViewModel(navigationSettings);
}
@if (navigationModel.Nodes.Count() > 0)
{
	string menuId = "menu_breadcrumb";
	bool showProductInBreadcrumb = Model.Item.GetBoolean("ShowProductInBreadcrumb");
	var breadCrumbNavigationTree = new Stack<Dynamicweb.Frontend.Navigation.NavigationTreeNodeViewModel>(navigationModel.Nodes);
	foreach (var navNode in navigationModel.Nodes){
<small style="display:none;">
navNode:@navNode.Link<br>
</small>
			}
	<ol class="breadcrumb small fs-7 mb-0 @menuId">
		@while (breadCrumbNavigationTree.Count > 0)
		{
			var currentNode = breadCrumbNavigationTree.Pop();
			if (currentNode.ShowInBreadcrumb)
			{
				if (!string.IsNullOrEmpty(currentNode.Link))
				{
					<li class="breadcrumb-item">
						<a li="@currentNode.Link" le="@currentNode.Level" na="@currentNode.Name" pa="@currentNode.PageId" href="@currentNode.Link"class="text-decoration-none" style="color: #415f77;">
							@currentNode.Name
						</a>
					</li>
				}
				else
				{
					<li class="breadcrumb-item">
						@currentNode.Name
					</li>
				}
			}
			foreach (var nextNode in currentNode.Nodes)
			{
				breadCrumbNavigationTree.Push(nextNode);
			}
		}
		@if (showProductInBreadcrumb && !string.IsNullOrEmpty(Dynamicweb.Context.Current?.Request.QueryString["ProductID"]))
		{
			string productid = Dynamicweb.Context.Current?.Request.QueryString["ProductID"] ?? string.Empty;
			string variantid = Dynamicweb.Context.Current?.Request.QueryString["VariantID"] ?? string.Empty;
			var product = Dynamicweb.Ecommerce.Services.Products.GetProductById(productid, variantid, Dynamicweb.Ecommerce.Common.Context.LanguageID);
			if (product != null)
			{
				<li class="breadcrumb-item">
					@product.Name
				</li>
			}
		}
	</ol>
}
else if (Pageview.IsVisualEditorMode)
{
	<div class="alert alert-dark m-0" role="alert">
		<span>@Translate("Breadcrumb navigation: The navigation will be shown here, if any")</span>
	</div>
}