frontend/src/pages/Error.js

import React from 'react';
import { Link } from 'react-router-dom';

function Error() {
  return (
    <div className="container mt-5 text-center">

      <h1>404 - Page Not Found</h1>

      <p>The page you are looking for does not exist.</p>

      <Link to="/" className="btn btn-primary">Go Home</Link>

    </div>
  );
}

export default Error;