Auth::user() returns null, but works in the function that Auth::login() called

Question

Laravel does not save my session after auth()->login()

Hello. I'm using Socialite to create Google login in Laravel application, the redirect and callback functions worked fine. But I am having some trouble in login session, Laravel did not save my session after calling Auth::login(), and Auth::user() returns null, but Auth::user() still works in the function (controller action) where Auth::login() called. Can someone help me?

class LoginController extends Controller
{
    public function callback(Request $request) {
        $googleUser = Socialite::driver('google')->user();
        $userLogin = [
            'id' => $googleUser->getId(),
            'name' => $googleUser->getName(),
            'email' => $googleUser->getEmail(),
            'avatar' => $googleUser->getAvatar(),
        ];
        $email = $userLogin['email'];
        $user = User::updateOrCreate(
            ['email' => $email],
            $userLogin
        );
        auth()->login($user);
        // This still working.
        // dd(auth()->user());
        return redirect()->route('debug');
    }
}

But it wasn't work in another controller action

class DebugController extends Controller {
    public function __invoke() {
        $user = auth()->user();
        // This returns null
        dd($user);
    }
}