why npm movie trailers not working code example

Example: youtbe trailer npm

$ npm install react-youtube

//usage
<YouTube
  videoId={string}                  // defaults -> null
  id={string}                       // defaults -> null
  className={string}                // defaults -> null
  containerClassName={string}       // defaults -> ''
  opts={obj}                        // defaults -> {}
  onReady={func}                    // defaults -> noop
  onPlay={func}                     // defaults -> noop
  onPause={func}                    // defaults -> noop
  onEnd={func}                      // defaults -> noop
  onError={func}                    // defaults -> noop
  onStateChange={func}              // defaults -> noop
  onPlaybackRateChange={func}       // defaults -> noop
  onPlaybackQualityChange={func}    // defaults -> noop
/>

//example
import React from 'react';
import YouTube from 'react-youtube';
 
class Example extends React.Component {
  render() {
    const opts = {
      height: '390',
      width: '640',
      playerVars: {
        // https://developers.google.com/youtube/player_parameters
        autoplay: 1,
      },
    };
 
    return <YouTube videoId="2g811Eo7K8U" opts={opts} onReady={this._onReady} />;
  }
 
  _onReady(event) {
    // access to player in all event handlers via event.target
    event.target.pauseVideo();
  }
}