Error executing template "/Designs/Swift/Paragraph/ALM_ArticleList.cshtml"
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Dynamicweb.Content.Items.Queries.Repository.IsPageAllowed(Page page)
   at Dynamicweb.Content.Items.Queries.Repository.GetPagesByIds(IEnumerable`1 parentIds, Boolean includeChildItems, Boolean checkPermissions, List`1& childPages)
   at Dynamicweb.Content.Items.Queries.Repository.SelectByParentPageIds(IEnumerable`1 parentIds, Query query, Boolean includeParagraphs, Boolean includeChildItems, Boolean checkPermissions, Boolean includeInheritedItems)
   at Dynamicweb.ItemPublisher.Frontend.GetItems()
   at Dynamicweb.ItemPublisher.Frontend.List()
   at Dynamicweb.ItemPublisher.Frontend.GetContent()
   at Dynamicweb.ItemPublisher.Frontend.GetContentBySettings(String settings)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Dynamicweb.Extensibility.AddIns.AddInManager.InvokeFunction(Object instance, String functionName, Object[] arguments)
   at Dynamicweb.Rendering.TemplateBase`1.RenderItemList(Object settings)
   at CompiledRazorTemplates.Dynamic.RazorEngine_60b85341c9c14bf490ce45ca7d6b8eda.<>c__DisplayClass0_0.<RenderArticleList>b__0(TextWriter __razor_helper_writer) in C:\inetpub\wwwroot\AllMedia\Development\Files\Templates\Designs\Swift\Paragraph\ALM_ArticleList.cshtml:line 101
   at CompiledRazorTemplates.Dynamic.RazorEngine_60b85341c9c14bf490ce45ca7d6b8eda.Execute() in C:\inetpub\wwwroot\AllMedia\Development\Files\Templates\Designs\Swift\Paragraph\ALM_ArticleList.cshtml:line 67
   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     @using System
  3     @using System.Web
  4     
  5     @{ 
  6     	string listSource = !string.IsNullOrEmpty(Model.Item.GetString("ListSource")) ? Model.Item.GetString("ListSource") : Model.PageID.ToString();
  7     	string articleListSortOrder = !string.IsNullOrEmpty(Model.Item.GetString("ArticleListSortOrder")) ? Model.Item.GetString("ArticleListSortOrder") : "Descending";
  8     	int maxItemsInList = !string.IsNullOrEmpty(Model.Item.GetInt32("MaxItemsInList").ToString()) ? Model.Item.GetInt32("MaxItemsInList") : 10;
  9     	string articleListLayout = !string.IsNullOrEmpty(Model.Item.GetString("ArticleListLayout")) ? Model.Item.GetString("ArticleListLayout") : "grid";
 10     	string columnTheme = !string.IsNullOrEmpty(Model.Item.GetString("ColumnTheme")) ? Model.Item.GetString("ColumnTheme") : string.Empty;
 11     	string columnThemeClass = columnTheme != string.Empty ? " theme " + columnTheme +  (articleListLayout == "carousel" ? " px-lg-4" : string.Empty) : string.Empty;
 12     	int gridSettings = !string.IsNullOrEmpty(Model.Item.GetInt32("GridSettings").ToString()) ? Model.Item.GetInt32("GridSettings") : 4;
 13     	int carouselSettings = !string.IsNullOrEmpty(Model.Item.GetInt32("CarouselSettings").ToString()) ? Model.Item.GetInt32("CarouselSettings") : 4;
 14     	bool hideScrollbar = Model.Item.GetBoolean("HideScrollbar");
 15     	string scrollbarClass = hideScrollbar == false ? " slider-nav-scrollbar" : string.Empty;
 16     	string settingsClassGrid = string.Empty;
 17     	string settingsClassCarousel = string.Empty;
 18     
 19     	//create cookie
 20     	HttpCookie HmaxItemsInList = new HttpCookie("maxItemsInListCookie");
 21     
 22     	//set value
 23     	HmaxItemsInList.Value = maxItemsInList.ToString();
 24     
 25     	//add
 26     	System.Web.HttpContext.Current.Response.Cookies.Add(HmaxItemsInList); 
 27     
 28     	switch (gridSettings)
 29     	{
 30     		case 1:
 31     			settingsClassGrid = " grid-md-1";
 32     			break;
 33     		case 2:
 34     			settingsClassGrid = " grid-md-2";
 35     			break;
 36     		case 3:
 37     			settingsClassGrid = " grid-md-3";
 38     			break;
 39     		case 4:
 40     			settingsClassGrid = " grid-md-2 grid-lg-3 grid-xl-4";
 41     			break;
 42     		case 5:
 43     			settingsClassGrid = " grid-md-2 grid-lg-3 grid-xl-5";
 44     			break;
 45     	}
 46     	switch (carouselSettings)
 47     	{
 48     		case 2:
 49     			settingsClassCarousel = " slider-item-show2";
 50     			break;
 51     		case 3:
 52     			settingsClassCarousel = " slider-item-show3";
 53     			break;
 54     		case 4:
 55     			settingsClassCarousel = " slider-item-show4";
 56     			break;
 57     		case 5:
 58     			settingsClassCarousel = " slider-item-show5";
 59     			break;
 60     	}
 61     
 62     	switch (articleListLayout)
 63     	{
 64     		case "grid":
 65     			<div class="grid gap-md-4 grid-1@(settingsClassGrid)@(columnThemeClass) item_@Model.Item.SystemName.ToLower() articles__wrapper" data-max-items="@maxItemsInList">
 66                 @{
 67     				@RenderArticleList("ALLM_NewsArticle", listSource, maxItemsInList, articleListSortOrder)
 68     				@*RenderArticleList("Swift_ArticleListPage", listSource, maxItemsInList, articleListSortOrder)*@
 69                     }
 70     			</div>
 71     			break;
 72     
 73     		case "carousel":
 74     			<div class="swiffy-slider slider-item-reveal slider-nav-round slider-item-nosnap swiffy-gap-lg-4@(settingsClassCarousel)@(columnThemeClass) item_@Model.Item.SystemName.ToLower()">
 75     				<div class="slider-container pb-3 py-lg-3 mt-lg-n3@(scrollbarClass)">
 76                     @{
 77     					@RenderArticleList("ALLM_NewsArticle", listSource, maxItemsInList, articleListSortOrder)
 78     					@*RenderArticleList("Swift_ArticleListPage", listSource, maxItemsInList, articleListSortOrder)*@
 79                         }
 80     				</div>
 81     
 82     				<button type="button" title="@Translate("Slider navigation button - Previous slider")" class="slider-nav"></button>
 83     				<button type="button" title="@Translate("Slider navigation button - Next slider")" class="slider-nav slider-nav-next"></button>
 84     
 85     				<script type="module" src="/Files/Templates/Designs/Swift/Assets/js/swiffy-slider.js"></script>
 86     				<script type="module">
 87     					swift.AssetLoader.Load('/Files/Templates/Designs/Swift/Assets/css/swiffy-slider.min.css', 'css');
 88     					document.addEventListener('load.swift.assetloader', function () {
 89     						swiffyslider.init()
 90     					});
 91     				</script>
 92     			</div>
 93     			break;
 94     
 95     	}
 96     }
 97     
 98     
 99     @helper RenderArticleList(string itemType, string listSource, int maxItemsInList, string articleListSortOrder)
100     {
101     	@RenderItemList(new
102     	{
103     		ItemType = itemType,
104     		ListTemplate = "ItemPublisher/List/ALM_List.cshtml",
105     		ItemFieldsList = "*",
106     		ListSourceType = "Page",
107     		ListSourcePage = listSource,
108     		ListPageSize = maxItemsInList,
109     		IncludeParagraphItems = true,
110     		ListOrderByDirection = articleListSortOrder,
111     		ListOrderBy = "PublishedDate"
112     	})
113     }
114     
115