An error occurred while attaching module 'eCom_ProductCatalog' (Dynamicweb.Frontend.Content).

Hi.

I'm experiences if you visit our customers product list page in the exact time a custom integration is getting products from BC the frontend throws an error, and there is no products. The paragraph that is failing is a swift_productcatalogapp, so the only thing in the template is:

@inherits Dynamicweb.Rendering.ViewModelTemplate<Dynamicweb.Frontend.ParagraphViewModel>

@if (Pageview.IsVisualEditorMode) {

<span>@Translate("Product catalog App: Edit this column to configure. (Product catalog app must be attached this paragraph)")</span>

</div>

}

@Model.GetModuleOutput()

</div>

So i don't see any way for me to prevent the error message frontend?

The complete error from the log:

2025-02-19 10:08:34.4066: An error occurred while attaching module 'eCom_ProductCatalog' (Dynamicweb.Frontend.Content). The url: https://scantruck.test.gotcha.dk/Default.aspx?ID=1761. System.NullReferenceException: Object reference not set to an instance of an object.
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.GetOrderedInheritableParentIds(Group group, String defaultLanguageId)
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.RecursivelySearchForFieldValues(Group group, String defaultLanguageId, List`1 categoryFields)
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
   at System.Lazy`1.CreateValue()
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.GetGroupFieldValuesByLanguage(Group group, List`1 categoryFields, String languageId, Boolean isInheritedValue, Boolean searchRecursively)
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.GetGroupCategoryFieldValues(IEnumerable`1 groups, List`1 fields, Boolean allowFallback)
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.GetDefaultCategoryValuesFromGroups(IEnumerable`1 groupInfos, List`1 catFields)
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldGroupValueService.GetDefaultCategoryValueFromGroups(IEnumerable`1 groupInfos, Field catField)
   at Dynamicweb.Ecommerce.Products.Categories.ProductCategoryFieldValueService.GetProductCategoryFieldValue(Product product, String categoryId, Field field)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.CreateView(ProductViewModelSettings settings, Product product, Field field)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.GetFieldDisplayGroupValues(ProductViewModelSettings settings, Product product, String languageID, Lazy`1 productIds)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.<>c__DisplayClass3_1.b__59()
   at Dynamicweb.Ecommerce.ProductCatalog.ViewModelPropertyFiller`1.Fill[S](T model, String propertyName, Func`1 source)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.BulkCreateView(ProductViewModelSettings settings, Boolean isRecursive, IList`1 products)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.<>c__DisplayClass23_0.b__0()
   at Dynamicweb.Ecommerce.ProductCatalog.ViewModelPropertyFiller`1.Fill[S](T model, String propertyName, Func`1 source)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewEngine.CreateView(ProductListViewModelSettings settings, IList`1 products)
   at Dynamicweb.Ecommerce.ProductCatalog.ViewModelFactory.CreateView(ProductListViewModelSettings settings, IEnumerable`1 productAutoIds)
   at Dynamicweb.Ecommerce.ProductCatalog.ProductCatalogFrontend.RenderProductList(ProductCatalogSettings settings, QuerySettings querySettings, IQuery query, String groupId, Boolean feed)
   at Dynamicweb.Ecommerce.ProductCatalog.ProductCatalogFrontend.GetModuleContent()
   at Dynamicweb.Frontend.Content.GetModuleOutput(Paragraph paragraph, PageView pageview)
2025-02-19 10:08:34.4153: Request headers: [
"Accept",
"Accept-Encoding",
"Accept-Language",
"Cache-Control",
"Connection",
"Cookie",
"Host",
"Referer",
"User-Agent",
"sec-ch-ua",
"sec-ch-ua-mobile",
"sec-ch-ua-platform",
"upgrade-insecure-requests",
"sec-fetch-site",
"sec-fetch-mode",
"sec-fetch-user",
"sec-fetch-dest",
"priority"
]
2025-02-19 10:08:34.4158: Request item keys: [
"DW_Current_ExecutionTable",
"DWPAGEVIEW",
"TemplateContext",
"EcomCart:CustomCartContext",
"alternateUrlKey",
"Product.UnitStock.62976...",
"Price.000501191..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000501191..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.64317...",
"Price.000123242..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123242..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62973...",
"Price.000123236..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123236..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62970...",
"Price.000123234..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123234..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62967...",
"Price.000123224..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123224..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62964...",
"Price.000123223..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123223..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.64341...",
"Price.000123212..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123212..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.64275...",
"Price.000123114..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123114..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62961...",
"Price.000123108..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123108..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.64321...",
"Price.000123106..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123106..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62958...",
"Price.000123105..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123105..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.64308...",
"Price.000123092..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123092..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62955...",
"Price.000123090..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123090..LANG1..DKK.DK.SHOP2.0.",
"Product.UnitStock.62952...",
"Price.000123073..LANG1..DKK.DK.SHOP2.0.",
"InformativePrice.000123073..LANG1..DKK.DK.SHOP2.0."
]
2025-02-19 10:08:34.4161: Request form: []

Developer forum

An error occurred while attaching module 'eCom_ProductCatalog' (Dynamicweb.Frontend.Content).

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