Error executing template "Designs/Swift/Navigation/BreadcrumbNavigation.cshtml"
System.ArgumentException: An item with the same key has already been added.
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at Dynamicweb.Ecommerce.Products.GroupRelation.GetGroupRelationsByChildId(String childId)
   at Dynamicweb.Ecommerce.Products.Group.get_IsTopGroup()
   at Dynamicweb.Ecommerce.Shops.Shop.GetTopLevelGroups(String languageId)
   at Dynamicweb.Ecommerce.Frontend.Navigation.GroupNavigationTreeNodeProvider.GetGroupsBySettings(PageNavigationSettings ecomSettings)
   at Dynamicweb.Ecommerce.Frontend.Navigation.GroupNavigationTreeNodeProvider.GetGroups(NavigationTreeNode parent, Page page)
   at Dynamicweb.Ecommerce.Frontend.Navigation.GroupNavigationTreeNodeProvider.GetNodes(NavigationContext context, NavigationSettings settings, NavigationTreeNode parent)
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   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_8f41c558dd6a45fea169bee7d5e8337c.<>c__DisplayClass0_0.<RenderNodes>b__0(TextWriter __razor_helper_writer) in D:\dynamicweb.net\Solutions\Flex Media\danzafe.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Navigation\BreadcrumbNavigation.cshtml:line 54
   at CompiledRazorTemplates.Dynamic.RazorEngine_8f41c558dd6a45fea169bee7d5e8337c.Execute() in D:\dynamicweb.net\Solutions\Flex Media\danzafe.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Navigation\BreadcrumbNavigation.cshtml:line 9
   at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext context, TextWriter reader)
   at RazorEngine.Templating.RazorEngineService.RunCompile(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass16_0.<RunCompile>b__0(TextWriter writer)
   at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
   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.Navigation.NavigationTreeViewModel>
  2     
  3     @if (!Pageview.IsVisualEditorMode)
  4     {
  5     	string menuId = Model.Parameters.ContainsKey("menu-id") ? $"menu_{Model.Parameters["menu-id"].ToString().ToLower()}" : string.Empty;
  6     	bool showProductInBreadcrumb = Model.Parameters.ContainsKey("showProductInBreadcrumb") ? Dynamicweb.Core.Converter.ToBoolean(Model.Parameters["showProductInBreadcrumb"]) : false; 
  7     
  8     	<ol class="breadcrumb small mb-0 @menuId">
  9     		@{@RenderNodes(Model.Nodes)}
 10     		@if (showProductInBreadcrumb && !string.IsNullOrEmpty(Dynamicweb.Context.Current.Request.QueryString["ProductID"]))
 11     		{
 12     			string productid = Dynamicweb.Context.Current.Request.QueryString["ProductID"];
 13     			string variantid = Dynamicweb.Context.Current.Request.QueryString["VariantID"];
 14     			var product = Dynamicweb.Ecommerce.Services.Products.GetProductById(productid, variantid, Dynamicweb.Ecommerce.Common.Context.LanguageID);
 15     			if (product != null)
 16     			{
 17     				<li class="breadcrumb-item">
 18     					@product.Name
 19     				</li>
 20     			}
 21     		}
 22     	</ol>
 23     }
 24     else if (Model.Nodes.Count() < 2)
 25     {
 26     	<div class="alert alert-dark m-0" role="alert">
 27     		<span>@Translate("Breadcrumb navigation: The navigation will be shown here, if any")</span>
 28     	</div>
 29     }
 30     
 31     @helper RenderNodes(IEnumerable<Dynamicweb.Frontend.Navigation.NavigationTreeNodeViewModel> nodes)
 32     {
 33     	foreach (var node in nodes)
 34     	{
 35     		if (node.ShowInBreadcrumb)
 36     		{
 37     			if (!string.IsNullOrEmpty(node.Link))
 38     			{
 39     				<li class="breadcrumb-item">
 40     					<a href="@node.Link">
 41     						@node.Name
 42     					</a>
 43     				</li>
 44     			}
 45     			else
 46     			{
 47     				<li class="breadcrumb-item">
 48     					@node.Name
 49     				</li>
 50     			}
 51     
 52     		}
 53     
 54     		{@RenderNodes(node.Nodes)}
 55     }
 56     }
 57