使用react- CKEDITOR -component抛出错误，指出CKEDITOR未定义

<script src="https://cdn.ckeditor.com/ckeditor5/29.0.0/classic/ckeditor.js"></script>

import ClassicEditor from '@ckeditor/ckeditor5-build-classic';

componentDidMount() {
  ClassicEditor
    .create( document.querySelector( '#editor' ) )
    .then( editor => {
      console.log( 'Editor was initialized', editor );
    } )
    .catch( error => {
      console.error( error );
    } );
}

import CKEditor from '@ckeditor/ckeditor5-react';
import ClassicEditor from '@ckeditor/ckeditor5-build-classic';

// 在组件中使用CKEditor
<CKEditor
  editor={ ClassicEditor }
  data="<p>Hello from CKEditor!</p>"
  onChange={ ( event, editor ) => {
    const data = editor.getData();
    console.log( { event, editor, data } );
  } }
/>