کار نکردن تابع latest یا orderBy در Eloquent

سلام دوستان گرامی ...
نمی دونم چرا این تابع latest یا orderBy در این کدم کار نمی کنه و ارور میده :

        $month = 12;
        $paymentSuccess = Payment::selectRaw('monthname(created_at) month , count(*) published')
            ->where('created_at','>',Carbon::now()->subMonth($month))
            ->where('payment', true)
            ->groupBy('month')
            ->orderBy('created_at','desc')
            ->get();
Error:
Illuminate \ Database \ QueryException (42000)
SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'syber.payments.created_at' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (SQL: select monthname(created_at) month , count(*) published from `payments` where `created_at` > 2018-02-23 08:03:22 and `payment` = 1 group by `month` order by `created_at` desc)