Error executing template "Designs/Swift/Paragraph/Swift_ProductComponentParagraph.cshtml"
System.ArgumentNullException: Value cannot be null.
Parameter name: source
   at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   at Dynamicweb.Content.PageService.GetPageOrLanguage(Int32 pageId, Int32 areaId)
   at CompiledRazorTemplates.Dynamic.RazorEngine_f3b405663209409d95b89945602b86b6.Execute() in D:\Dynamicweb.net\Solutions\andersen-nielsen.cloud.dynamicweb-cms.com\Files\Templates\Designs\Swift\Paragraph\Swift_ProductComponentParagraph.cshtml:line 7
   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.ParagraphViewModel>
  2     
  3     @{ 
  4     	int itemSourcePageId = Convert.ToInt32(Model.Item.GetRawValueString("ComponentSource", "0"));
  5     
  6     	var pageService = new Dynamicweb.Content.PageService();
  7     	itemSourcePageId = itemSourcePageId > 0 && pageService.GetPageOrLanguage(itemSourcePageId, Pageview.AreaID) != null ? pageService.GetPageOrLanguage(itemSourcePageId, Pageview.AreaID).ID : itemSourcePageId;
  8     }
  9     
 10     @if (itemSourcePageId != 0) {
 11     	var page = Dynamicweb.Content.Services.Pages.GetPage(itemSourcePageId);
 12     
 13     	if (page != null) { 
 14     		var pageViewModel = Dynamicweb.Frontend.ContentViewModelFactory.CreatePageInfoViewModel(page);
 15     		string itemTheme = !string.IsNullOrWhiteSpace(pageViewModel.Item.GetRawValueString("Theme")) ? " theme " + pageViewModel.Item.GetRawValueString("Theme").Replace(" ", "").Trim().ToLower() : string.Empty;
 16     
 17     		string contentPadding = pageViewModel.Item.GetRawValueString("ContentPadding", "");
 18     		contentPadding = contentPadding == "none" ? "p-0" : contentPadding;
 19     		contentPadding = contentPadding == "small" ? "p-2 p-md-3" : contentPadding;
 20     		contentPadding = contentPadding == "large" ? "p-4 p-md-5" : contentPadding;
 21     		
 22     		string layout = Model.Item.GetRawValueString("Layout", "top");
 23     		switch (layout)
 24     		{
 25     			case "top":
 26     			case "alignLeftMiddle":
 27     				layout = "";
 28     				break;
 29     			case "center":
 30     			case "alignLeft":
 31     				layout = "d-flex align-items-center text-start";
 32     				break;
 33     		}
 34     
 35     		<div class="@contentPadding @itemTheme @(layout) h-100 item_@Model.Item.SystemName.ToLower()">
 36     			<div class="w-100">
 37     				@RenderGrid(itemSourcePageId)
 38     			</div>
 39     		</div>
 40     	} else if (Pageview.IsVisualEditorMode) { 
 41     		<div class="alert alert-dark m-0" role="alert">
 42     			<span>@Translate("The selected component does not exist anymore")</span>
 43     		</div>
 44     	}
 45     } else if (Pageview.IsVisualEditorMode) { 
 46     	<div class="alert alert-dark m-0" role="alert">
 47     		<span>@Translate("Product component: The component will be shown here, if any")</span>
 48     	</div>
 49     }
 50