× 錯誤：元素類型無效：需要一個字符串（對於內置組件）或一個類/函數（對於復合組件）但得到：object

Question

請幫我解決這個錯誤：錯誤：元素類型無效：需要一個字符串（對於內置組件）或一個類/函數（對於復合組件），但得到：object。 這是我的代碼：

 index.js: import ReactDOM from 'react-dom'; import './index.css' import reportWebVitals from './reportWebVitals'; import ApolloProvider from './ApolloProvider' ReactDOM.render( < ApolloProvider / >, document.getElementById('root') ); reportWebVitals();

ApolloProvider.js：

 import React from 'react' import App from './App' import ApolloClient from 'apollo-client' import { InMemoryCache } from 'apollo-cache-inmemory' import { createHttpLink } from 'apollo-link-http' import { ApolloProvider } from '@apollo/react-hooks' const httpLink = createHttpLink({ uri: 'http//localhost:5000' }) const client = new ApolloClient({ link: httpLink, cache: new InMemoryCache() }) export default ( < ApolloProvider client = { client } > < App / > < /ApolloProvider> );

Answer 1

嘗試

ReactDOM.render(
  ApolloProvider ,
  document.getElementById('root')
);

或更新提供程序以導出組件

export default function provider() {
return (
  <ApolloProvider client={client}>
    <App />
  </ApolloProvider>
);
}