Lucene.Net.Store.AlreadyClosedException: this IndexReader is closed
at Lucene.Net.Index.IndexReader.EnsureOpen()
at Lucene.Net.Index.DirectoryReader.DocFreq(Term t)
at Lucene.Net.Search.IndexSearcher.DocFreq(Term term)
at Lucene.Net.Search.Similarity.IdfExplain(Term term, Searcher searcher)
at Lucene.Net.Search.TermQuery.TermWeight..ctor(TermQuery enclosingInstance, Searcher searcher)
at Lucene.Net.Search.TermQuery.CreateWeight(Searcher searcher)
at Lucene.Net.Search.BooleanQuery.BooleanWeight..ctor(BooleanQuery enclosingInstance, Searcher searcher)
at Lucene.Net.Search.BooleanQuery.CreateWeight(Searcher searcher)
at Lucene.Net.Search.Query.Weight(Searcher searcher)
at Lucene.Net.Search.Searcher.CreateWeight(Query query)
at Lucene.Net.Search.Searcher.Search(Query query, Filter filter, Int32 n, Sort sort)
at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.SearchInternal(IQuery query, QuerySettings settings)
at Dynamicweb.Indexing.Lucene.LuceneIndexProvider.Query(IQuery query, QuerySettings settings)
at Dynamicweb.Indexing.Queries.IndexQueryProvider.Query(IQuery query, QuerySettings settings)
at Dynamicweb.Querying.QueryService.Query(IQuery query, QuerySettings settings)
at Dynamicweb.eCommerce.Frontend.Frontend.GetProductsFromIndexQuery()