System.InvalidOperationException: Sequence contains no elements at System.Linq.Enumerable.Aggregate[TSource](IEnumerable`1 source, Func`3 func) at Sitecore.Marketing.Commerce.Vfw.Pipelines.Sitemap.GenerateSitemap.CreateSitemap() in Y:\VFW\dev.azure.com\veteransofforeignwars\vfwstore-classic\Source\Sitecore.Marketing.Commerce.Vfw\Pipelines\Sitemap\GenerateSitemap.cs:line 83