问响应路由器本机错误，意外令牌

EN

import { StatusBar } from "expo-status-bar";
import React from "react";
import { StyleSheet, Text, View } from "react-native";
import Login from "./components/Login";
import Home from "./components/Home";
import { NativeRouter, Switch, Route, Link } from "react-router-native";
im;
export default class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      user: {},
    };
  }
  componentDidMount() {
    this.authListener();
  }
  authListener() {
    fire.auth().onAuthStateChanged((user) => {
      if (user) {
        this.setState({ user });
      } else {
        this.setState({ user: null });
      }
    });
  }
  render() {
    return (
      <NativeRouter>
        <View style={styles.container}>
          <Switch>
            <Route exact path="/">
              {this.state.user ? <h1><Home/></h1> : <h1><Login/></h1>}
            </Route>
          </Switch>
        </View>
      </NativeRouter>
    );
  }
}