That is my App.js

import logo from './logo.svg';
import './App.css';
import Header  from  './componentes/Header';
import FormularioLogin from './componentes/FormularioLogin';
import { createBrowserRouter, RouterProvider } from 'react-router-dom';
import Menu from './pages/Menu';


const router = createBrowserRouter(
 [ {path: 'menu', Component: <Menu/> },
 {path: '/', Component: <App/> },
]
)

function App() {
  return <RouterProvider router={router} />;
}

export default App;

That’s my Menu.js

export default function Menu() {
    return (<div>teste</div>
)
}