App.js

//App.js
import React from 'react';
..생략
import { PersistGate } from 'redux-persist/integration/react';

export const {store, persistor} = configureStore();

const App = () => (
  <Provider store={store}>
    <ConnectedRouter history={history}>
      <PersistGate loading={null} persistor={persistor}>
   			..
          <Switch>
            <Routes />
          </Switch>
        	..
    </PersistGate>
    </ConnectedRouter>
  </Provider>
);

export default App;