我的控制器中有 store 方法，它返回以下錯誤：錯誤安慰Preview tabexception: "ErrorException"file: "C:\........\vendor\laravel\framework\src\Illuminate\Support\Str.php"line: 419message: "Array to string conversion"安慰Response tab   {        "file": "C:\\........\\app\\Http\\Controllers\\Api\\Front\\CartController.php",        "line": 380,        "function": "save",        "class": "Illuminate\\Database\\Eloquent\\Model",        "type": "->"    },代碼public function checkout(Request $request){    $user = auth('api')->user();    $cartItems = CartStorage::where('user_id', $user->id)->get();    $address = AddressUser::where('id', $request->input('address'))->first();    foreach($cartItems as $item) {        $cartData = $item->cart_data;        // add to orders table        try {            $order = new Order();            $order->ordernu = 'Si-'.mt_rand(1000000000, 9999999999);            $order->user_id = $user->id;            $order->order_data = $cartData;            $order->quantity = $cartData['quantity'];            $order->price = $request->input('totalPrice');            $order->courier = $request->input('courier');            $order->courier_service = $request->input('courierService');            $order->shippingcode = $request->input('shippingcode');            $order->shipping_price = $request->input('shippingPrice');            $order->address = $address->address;            $order->kecamatan = $address->kecamatan;            $order->kelurahan = $address->kelurahan;            $order->kota = $address->kota;            $order->provinsi = $address->provinsi;            $order->postalcode = $address->postalcode;            $order->weight = $request->input('weight');            $order->phone = $request->input('phone');            $order->buyer_name = $user->name;            $order->buyer_email = $user->email;            $order->note = $request->input('note');            $order->received = false;            $order->save();        }    }}注意：我已經測試了dd放入order列中的每一個數據，并且所有數據都獲得了真實值。任何想法？