Invalid 'where' condition. An entity member is invoking an invalid property or method.

                var name = "aa"

                var listAccounts = (from i in contexto.ContextoServico.AccountSet
                                    where 
                                    name.ToUpper().Contains(i.ojc_name.ToUpper())
                                    orderby i.ojc_name ascending
                                    select i).Take(10).ToList();