title: cant add bootstrap-carousel for my React App
body: <p>I copied  carousel code in bootstap react page.  it gave this error : <strong>./node_modules/bootstrap/dist/js/bootstrap.esm.js
  Module not found: Can't resolve '@popperjs/core' in .....</strong></p>
  <p>.However, I did install popper.js by typing <strong>npm install popper.js</strong> Also I tried this: <strong>npm install popper.js --save</strong>. And I imported at beginning of the page like so :</p>
  <pre><code>import React, { Component } from 'react';
  import { Link } from 'react-router-dom';
  import { Carousel } from 'bootstrap';
  import Popper from 'popper.js';
  </code></pre>
  <p>What did I wrong please help me. Also Should import same thing in my index.js file. Thanks in advance.</p>