<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Frontend Masters React</title>
</head>
<body>
  <div id="app"></div>
  <script src="public/bundle.js"></script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Frontend Masters React</title>
</head>
<body>
  <div id="app"></div>
  <script src="/public/bundle.js"></script>
</body>
</html>

Add a / in front of path for bundle.js
Add a / in front of path for bundle.js
