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

We have upgraded from 8+ to 9.13.5.

When quering products we receive the following error. We have searched for an answer but with no luck.

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

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.Indexing.Querying.Faceting.FacetGroupHelper.PrepareIndexFieldLookup(IFacetGroup facets)
   at Dynamicweb.Indexing.Querying.Faceting.FacetGroupHelper.ConvertToFacets(XElement obj)
   at Dynamicweb.Indexing.Querying.QueryService.LoadFacets(String fileName)
   at Dynamicweb.Ecommerce.Frontend.Frontend.GetProductsFromIndexQuery(ProductCatalogShowType settingsType)
   at Dynamicweb.Ecommerce.Frontend.Frontend.EcomRender()
   at Dynamicweb.Ecommerce.Frontend.Frontend.GetContent()
   at Dynamicweb.Frontend.Content.GetModuleOutput(Paragraph paragraph, PageView pageview)

Thank you

- Eva

Developer forum

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

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

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