import React from 'react' import { QueryClient, QueryClientProvider } from 'react-query' import { Route, Routes } from 'react-router-dom' import './App.css' import AddStudent from './views/coordinator/AddStudent' import Coordinator from './views/coordinator/Coordinator' import Groups from './views/coordinator/Groups' import Leaders from './views/coordinator/Leaders' import Students from './views/coordinator/Students' const queryClient = new QueryClient({ defaultOptions: { queries: { refetchOnWindowFocus: false, }, }, }) function App() { return (