I develop my site in php with the Laravel framework. Below is the source code for my drop-down menu, however the submenus are not displayed on browsers. What can be the problem ?

@guest

My Account

@endguest

    @auth
      <button type="button" class="btn btn-light dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
        {{Auth::user()->name}}
      </button>
      <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="{{route('app_logout')}}">Logout</a></li>
      </ul>

    @endauth


  </div>

I tried with Firefox, Google Chrome and Microsoft Edge browsers and I still have nothing