在 laravel 6 中，我有以下代碼$messageBag = Validator::make([], [ 'x' => 'required|int' ])->getMessageBag(); // just for example并且需要轉換成$messageBag這樣的array結構：[   "The x field is required.",   "The x field is bla bla bla.",   "The y field is something.",]的結構$messageBag->toArray()是：[   "x" => [        "The x field is required.",   ],]