Super expression must either be null or a function?

我怎么查都查不到 問題在哪

父組件是這樣?

import?React,?{?Component?}?from?'react'

import?{?View,?Text,?Button?}?from?'@tarojs/components'

import?'./index.less'

import?Child?from?'./child.jsx';

export?default?class?Index?extends?Component?{

??state?=?{

????name:?'林彥俊'

??}

??nameClick?=?()?=>?{

????this.setState({?name:?'尤長靖'?})

??}

??render()?{

????const?{?name?}?=?this.state;

????return?(

??????<View?className='index'>

????????<Button?onClick={this.nameClick}>更改名字</Button>

????????<Text>{name}</Text>

????????<Child?name='857'/>

??????</View>

????)

??}

}

子組件是這樣?

import?taro,?{?Component?}?from?'@tarojs/taro';

import?{?View,?Text?}?from?'@tarojs/components'

class?Child?extends?Component?{

????render()?{

????????return?(

????????????<View>

????????????????<Text>子組件</Text>

????????????????{this.props.name}

????????????</View>

????????);

????}

}

export?default?Child;