如何修复未知属性 - yii \ base \ UnknownPropertyException

I try to make a delete function. but this happens,

Unknown Property – yii\base\UnknownPropertyException

This is my controller,

    $food=Makanan::findOne($id);
    unlink(Yii::$app->basePath . '/@web/upload/' . $food->img);
    $this->findModel($id)->delete();
    // $food->delete();

    return $this->redirect(['index']);
}

and this is my model,

return[
                [['nama','keterangan','stok','harga','img'],'required'],
                [['img'],'file','extensions'=>'jpg,jpeg,png'],
                [['stok','harga'],'integer'],
            ];

help please

You are selecting Makanan model record by id, but there is no such attribute in your model rules