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

System.Data.SqlClient.SqlException (0x80131904): Transaction (Process ID 52) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   at Dynamicweb.Data.Database.CreateDataReader(IDbCommand command, CommandBehavior behavior)
   at Dynamicweb.Data.Database.CreateDataReader(CommandBuilder commandBuilder, IDbConnection connection, IDbTransaction transaction, CommandBehavior behavior, Int32 commandTimeout)
   at Dynamicweb.Data.Database.CreateDataReader(CommandBuilder commandBuilder, IDbConnection connection, IDbTransaction transaction, Int32 commandTimeout)
   at Dynamicweb.Ecommerce.Products.ProductRepository.GetProductKeysByGroupId(String groupId, Boolean useOrderBy, Boolean includeVariants, String productLanguageId, Boolean doRefactoring, Boolean useAssortments)
   at Dynamicweb.Ecommerce.Orders.Discounts.Discount.ProcessProductSelections(HashSet`1& productKeys, HashSet`1& includedQueries, HashSet`1& excludedQueries)
   at Dynamicweb.Ecommerce.Orders.Discounts.Discount.GetRelevantProductKeys()
   at Dynamicweb.Ecommerce.Orders.Discounts.DiscountService.StatelessSetLookup(Discount discount, ConcurrentDictionary`2 lookup)
   at Dynamicweb.Ecommerce.Orders.Discounts.DiscountService.InitializeLookup()
   at System.Lazy`1.CreateValue()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Lazy`1.get_Value()
   at Dynamicweb.Ecommerce.Orders.Discounts.DiscountService.GetDiscounts(DiscountApplyType[] discountTypes, String[] productKeys, Int32 userId, ICollection`1 groupIds, String customerNumber)
   at Dynamicweb.Ecommerce.Orders.Discounts.DiscountService.GetDiscounts(DiscountApplyType discountType, Product product, User user)
   at Dynamicweb.Ecommerce.Orders.Discounts.DiscountInfoCollection.LoadDiscounts(User user)
   at Dynamicweb.Ecommerce.Products.Product.GetDiscountMatrix(String currencyCode, String countryCode, User user, String unitId, String shopId)
   at Dynamicweb.Ecommerce.Frontend.Renderer.RenderProduct(Product product, Boolean extendedProperties, Template template, Int32 loopCounter, Boolean renderRelated, String productUrl, Int32 quantity, Int32 wishListId, Boolean renderPublicList, Boolean isRecursiveCall, Lazy`1 categoryFieldSorting, Int32 orderLineOfProductCount, RenderingContext renderingContext, String unitId)
   at Dynamicweb.Ecommerce.Frontend.Renderer.RenderProduct(Product product, Boolean extendedProperties, String unitId)
   at Dynamicweb.Ecommerce.Frontend.Frontend.RenderProduct(Product product, String unitId)
   at Dynamicweb.Ecommerce.Frontend.Frontend.EcomRender()
   at Dynamicweb.Ecommerce.Frontend.Frontend.GetContent()
   at Dynamicweb.Frontend.Content.GetModuleOutput(Paragraph paragraph, PageView pageview)
ClientConnectionId:2f8bb129-4b2e-4f5e-a3a6-e11f96f2f6d9
Error Number:1205,State:56,Class:13