<Router initialEntries={['/home']}>
          <Switch>
             <Route exact path='/home' component={Home} />
             <Route exact path='/todo' component={Todo} />
             <Route exact path='/message' component={Message} />
             <Route exact path='/me' component={PersonalCenter} />
        </Switch>
       </Router>

出现这样的错误：

Attempted import error: 'Switch' is not exported from 'react-router-dom'.

原因是在 react-router-dom 6.0以后 Switch 就不用了

在package.json 中看了一下版本：

 修改成为：

<Router initialEntries={['/home']}>
          <Routes>
             <Route exact path='/home' component={Home} />
             <Route exact path='/todo' component={Todo} />
             <Route exact path='/message' component={Message} />
             <Route exact path='/me' component={PersonalCenter} />
        </Routes>
       </Router>

Switch 修改为 Routes

无报错

希望对你有所帮助