Проблема с приложением на React

 import { StatusBar } from 'expo-status-bar'; 
import { StyleSheet, Text, View, Button } from 'react-native'; 
import {useState} from 'react'; 
 
export default function App() { 
   
  const [count, setCount] = useState(0); 
 
  function foo() { 
    setCount(count += 1) 
  } 
 
  return ( 
     
      Open up App.js to start working on your app! 
      {count} 
       
     
  ); 
} 
 
const styles = StyleSheet.create({ 
  container: { 
    flex: 1, 
    backgroundColor: '#fff', 
    alignItems: 'center', 
    justifyContent: 'center', 
  }, 
});