我使用 React Router 和 Laravel。當我瀏覽 Link 元素時一切正常，但是當我更改瀏覽器地址行以手動顯示另一個組件時，Laravel 顯示它默認的 404 頁面。這是默認的 web.php 內(nèi)容，在welcome.blade.php 中我包含 js/app.js 文件：Route::get('/', function () {    return view('welcome'); });這是我的 App.js 內(nèi)容：import React from 'react';import { Switch, Route } from "react-router-dom";import Signin from "../../containers/Signin";import Signup from "../../containers/Signup";import Error from "../../containers/Error";import Courses from "../../containers/Courses";import Course from "../../containers/Course";import Quiz from "../../containers/Quiz";import Header from "../Header";import "./App.css";import Library from "../../containers/Library";import QuizResults from "../../containers/QuizResults";import Main from "../Main";import StudentsList from "../../containers/StudentsList";function App(){  return (    <div className="App">      <Header isLogged={false}/>      <Switch>        <Route exact path='/' component={Signin} />        <Route path='/signup' component={Signup} />        <Main>          <Route path='/courses' component={Courses} />          <Route path='/course/:id' component={Course} exact/>          <Route path='/quiz' component={Quiz} />          <Route path='/library' component={Library} />          <Route path='/quiz-results' component={QuizResults} />          <Route path='/students' component={StudentsList} />        </Main>        <Route component={Error} />      </Switch>    </div>  );}export default App;應(yīng)用程序.js：import React from 'react';import ReactDOM from 'react-dom';import { BrowserRouter } from 'react-router-dom';import App from './components/App';import './index.css';ReactDOM.render(  <React.StrictMode>    <BrowserRouter>      <App />    </BrowserRouter>  </React.StrictMode>,  document.getElementById('root'));那么，如何強制 React Router 對直接瀏覽器地址行更改做出反應(yīng)？