Laravel withoutMiddleware and unauthenticated conflict ?

Hi I am implementing withoutMiddleware, the link api/v1/bills returned 401 unauthorized! below is my code:

Route::group(['middleware' => 'auth:api', 'prefix' => 'v1'], function () {

Route::get('bills', [BillController::class, 'index'])->withoutMiddleware('auth:api');
Route::resource("bills", BillController::class);

I think is because unauthenticated method in Authenticate.php is applying

Http/Middleware/Authenticate.php

protected function unauthenticated($request, array $guards)

{

    if (in_array('api', $guards)) {
        abort(response()->json(['message' => 'Unauthorized!'], 401));
    } else {
        return route('login');
    }

}

Thanks

My laravel version: Laravel Framework 9.52.16