TypeError:无法在Laravel Jetstream-inertia中读取null (读取'dataset')的属性

use Illuminate\Http\Request;
use Inertia\Inertia;

class DashboardController extends Controller
{
    public function index(Request $request)
    {
        return Inertia::render('Dashboard', [
            'dataset' => $this->getDataset(),
        ]);
    }

    private function getDataset()
    {
        // 确保这里返回的数据不为 null
        return [
            'key' => 'value',
        ];
    }
}

import { usePage } from '@inertiajs/inertia-vue3';

export default {
    setup() {
        const { dataset } = usePage().props;

        // 确保 dataset 不为 null 或 undefined
        if (dataset) {
            console.log(dataset.key);
        } else {
            console.log('Dataset is not available');
        }

        return {
            dataset,
        };
    },
};