Livewire我正在嘗試通過(guò)稱(chēng)為內(nèi)部組件的 laravel 控制器獲取一些技術(shù)人員數(shù)據(jù)。在某些情況下，控制器返回null是因?yàn)闆](méi)有相關(guān)技術(shù)人員。這是我渲染視圖的 livewire 組件：class TechniciansAssociated extends Component{    public function render()    {        $technicians = (new HomeController())->getTechnicians();        return view('livewire.dashboard.technicians-associated', [            'technicians' => $technicians,        ]);    }}這里從家庭控制器調(diào)用函數(shù)：public function getTechnicians(){    $customer_ids = json_decode(User::find(Auth::id())->userCustomers->customer_id,true);    $technicians_data = DB::connection('mysql')        -> select('SELECT distinct users.id, users.name, users.surname, users.lastname, users.email, users.cargo, users.photo           FROM users           INNER JOIN contractsproductsmulti AS cpm ON users.id = cpm.userId           INNER JOIN contractsproducts AS cp ON cp.id = cpm.contractproduct_id           INNER JOIN contracts AS cont ON cont.id = cp.idcontract           WHERE users.isActive = 1 AND cont.idCustomer IN (?)', $customer_ids        );    if (count($technicians_data) > 0){        return $technicians_data;    }    return null;}最后，當(dāng)嘗試獲取渲染 livewire 視圖的主視圖時(shí)，我遇到了錯(cuò)誤@section('content')<section id="dash-cust-info">    <div class="row p-t-30 p-b-30">        <div class="col-md-6">            <h4>Customer info</h4>        </div>        <div class="col-md-3">            <h4>Comm_1</h4>            <div class="card no-border no-margin">                @livewire('dashboard.commercials-associated')            </div>        </div>        <div class="col-md-3">            <h4>Comm_2</h4>            <div class="card no-border no-margin">                @livewire('dashboard.technicians-associated')            </div>        </div>    </div>....錯(cuò)誤：Undefined offset: 1 (View: /......../resources/views/home.blade.php)