laravel-inertia-template/config/admin.php

<?php

use App\Admin\Http\Middleware\HandleInertiaRequests;

return [
    'route' => [
        'domain' => env('ADMIN_ROUTE_DODMAIN', null),

        'prefix' => env('ADMIN_ROUTE_PREFIX', 'admin'),

        'middleware' => [
            'web',
            HandleInertiaRequests::class,
        ],
    ],
];