为配备React路由器的应用程序构建PrivateRoute时，Object()不是一个函数

import React from 'react';
import { Route, Redirect } from 'react-router-dom';

const PrivateRoute = ({ component: Component, ...rest }) => {
  // 在此处编写验证用户是否登录的逻辑
  // 如果用户已登录，则返回组件，否则重定向到登录页面
  return (
    <Route
      {...rest}
      render={(props) =>
        isAuthenticated() ? (
          <Component {...props} />
        ) : (
          <Redirect to="/login" />
        )
      }
    />
  );
};

import React from 'react';
import { BrowserRouter as Router, Switch } from 'react-router-dom';

const App = () => {
  return (
    <Router>
      <Switch>
        <PrivateRoute exact path="/" component={Home} />
        <PrivateRoute path="/dashboard" component={Dashboard} />
        <Route path="/login" component={Login} />
      </Switch>
    </Router>
  );
};