#20 Дописал забытый импорт

planner-front/src/index.js

@@ -5,6 +5,7 @@ import App from './App';
 import { configureStore } from '@reduxjs/toolkit';
 import { Provider } from 'react-redux';
 import usersReducer from './store/reducers/usersReducer';
+import axios from 'axios';
 
 const localStorageMiddleware = ({getState}) => (next) => (action) => {
   const result = next(action);