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

System.NullReferenceException: Object reference not set to an instance of an object.
   at Co3.ID.Dw.Relewise.Services.SearchService.GetRelewiseVariant(ProductResult productResult, Int32 areaId) in D:\a\1\s\Co3.ID.Dynamicweb.Relewise\Services\SearchService.cs:line 383
   at Co3.ID.Dw.Relewise.Searching.IDMacro.Evaluate(String action) in D:\a\1\s\Co3.ID.Dynamicweb.Relewise\Searching\IDMacro.cs:line 67
   at Dynamicweb.Indexing.Lucene.Helpers.GetValueFromExpression(Expression exp, IDictionary`2 parameters)
   at Dynamicweb.Indexing.Lucene.Helpers.ParseQueryExpressionInternal(IIndex index, Expression expression, Analyzer analyzer, QuerySettings settings)
   at Dynamicweb.Indexing.Lucene.Helpers.ParseQueryExpressionInternal(IIndex index, Expression expression, Analyzer analyzer, QuerySettings settings)
   at Dynamicweb.Indexing.Lucene.Helpers.ParseQueryExpression(IIndex index, Expression expression, QuerySettings settings)
   at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.SearchInternal(IQuery query, QuerySettings settings)
   at Dynamicweb.Indexing.Querying.QueryService.Query(IQuery query, QuerySettings settings)
   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)