react运行时出现这个问题社会解决呀


import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';

import './index.css';
import App from './App';
import reportWebVitals from './reportWebVitals';
import store from './store';

ReactDOM.render(
    <React.StrictMode>
        <Provider store={store}>
            <App />
        </Provider>
    </React.StrictMode>,
    document.getElementById('root')
);

// If you want to start measuring performance in your app, pass a function
// to log results (for example: reportWebVitals(console.log))
// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
reportWebVitals();

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看一看 这个文件 Index.js 是大写还是小写

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