Undefined for multiple page manager in React

Hi, please what is the best way to implement multiple page manager in a react app.

I have successfully implemented this without page manager like so:

  useEffect(() => {
    const editor = grapesjs.init({
      container: "#editor",
      storageManager: {
        type: "remote",
        stepsBeforeSave: 2,
        contentTypeJson: true,
        storeComponents: true,
        storeStyles: true,
        storeHtml: true,
        storeCss: true,
        // id: "my-",
        urlStore: `some-url`,
        urlLoad: `some-url`,
        headers: {
          "Content-Type": "application/json",
        },
        credentials: 'omit',
      },
      panels: { defaults: [] },
      plugins: [gjsPresetWebpage],
      pluginsOpts: {
        gjsPresetWebpage: {},
      },
    });
    editor.Panels.getButton('options', 'sw-visibility').set('active', true);
    setEditor(editor);
  }, []);


  return (
    <Wrapper bgColor={bgColor} hoverColor={hoverColor}>
      <div id="editor"></div>
    </Wrapper>
  );

For the page manager implementation I try this:

  useEffect(() => {
    const editor = grapesjs.init({
      container: "#editor",
      storageManager: {
        type: "remote",
        stepsBeforeSave: 2,
        contentTypeJson: true,
        storeComponents: true,
        storeStyles: true,
        storeHtml: true,
        storeCss: true,
        // id: "my-",
        urlStore: `some-url`,
        urlLoad: `some-url`,
        headers: {
          "Content-Type": "application/json",
        },
        credentials: 'omit',
      },
    pageManager: true, // here
      panels: { defaults: [] },
      plugins: [gjsPresetWebpage],
      pluginsOpts: {
        gjsPresetWebpage: {},
      },
    });
    editor.Panels.getButton('options', 'sw-visibility').set('active', true);
  const pageManager = editor.Pages;  // here
  pageManager.getAll() // here
console.log(pageManager) // undefined
    setEditor(editor);
  }, []);

Here, I get undefined for page manager. I would appreciate any help please.

Thanks