Entity Framework Method Not Found Error

IEnumerable<T> Lista = null;
               using (var transactionScope = TransactionScopeControl.getTransactionScope())
               {
                   Lista = context.Set<T>().Where(expression).AsNoTracking(); // error is throw here.
                   transactionScope.Complete();
               }

Method Not Found: 'System.Data.Entity.Core.Metadata.Edm.EdmModel System.Data.Entity.Infrastructure.DbModel.get_StoreModel()'.