Reactnative TypeError ： props.navigation.getParam 不是函数. In(props.navigation.getParam('name')

我面临的问题是TypeError : props.navigation.getParam不是一个功能.(props.navigation.getParam('name')年.我用的是reactNavigation version 5.x.这个代码在reactNavigation 3中工作.我做错了什么？

这是我的密码

export default class ChatScreen extends Component {
static navigationOption = ({ navigation }) => {
    return {
        title: navigation.getParam('name', null)
    }
}
 
constructor(props) {
    super(props);
   
  
    this.state = {
        person:{
           name:props.navigation.getParam('name'),
            phone:props.navigation.getParam('phone'),
            // name:'Raushan',
          //   phone:9931428888
        },
        textMessage: ''
    };
   
}

状态节值出错.

`

const Stack = createStackNavigator();
function App() {
  return (
    <NavigationContainer>
      <Stack.Navigator initialRouteName="Auth">
        <Stack.Screen name="AuthLoading" component={AuthLoadingScreen} />
        <Stack.Screen name="App" component={HomeScreen} options={{ title: 'Chats' }}/>
        <Stack.Screen name="Chat" component={ChatScreen} options={({ route }) => ({ title: route.params.name })}/>
        <Stack.Screen name="Auth" component={LoginScreen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}
export default App;

`

并在屏幕上导航

onPress={()=>this.props.navigation.navigate('Chat',item)}