System.InvalidOperationException: Invalid attempt to call Read when reader is closed.
at System.Data.SqlClient.SqlDataReader.TryReadInternal(Boolean setTimeout, Boolean& more)
at System.Data.SqlClient.SqlDataReader.Read()
at System.Data.Linq.SqlClient.ObjectReaderCompiler.ObjectReaderBase`1.Read()
at System.Data.Linq.SqlClient.ObjectReaderCompiler.ObjectReader`2.MoveNext()
at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source)
at CompiledRazorTemplates.Dynamic.cafaeeacadaade.Execute()
at RazorEngine.Templating.TemplateBase.Run(ExecuteContext context)
at System.Web.Mvc.HtmlTemplateBase`1.Run(ExecuteContext context)
at CMS.Core.ITemplateExtensions.Run[T](ITemplate template, T Model)
at CMS.Core.ITemplateExtensions.Parse[T](String template, T Model)
@{var books = ERP.Data.DBContext.Current.Product.Active().OrderByDescending(i => i.DateUpdated).ToList();}

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Error:
Value cannot be null.
Parameter name: writer

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Featuring complete portfolio & virtual showroom of 170 active Publishers in Bangladesh.

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Portfolio of an ever growing list of legends. About 3,000 Bengali authors & Poets of the past, present & future.

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Books

A complete online catalog of Bangla books. From the everlasting classics to modern literature of the future generation.