دلیل این ارور چیه

$id=intval($_GET['id']);

       $model=Objects::find()->where(['id' => $id])->One();
       if($values=Fieldsrelationship::find()->where(['object_id' => $id])->All()){
         $fields=Fields::find()->where(['id' => $values->field_id])->All();
         retu $this->render('show',['post'=>$model,'fields'=>$fields,'values'=>$values]);
       }