BUG: We are trying to store the data from grapesJS editor in Angular 10 application, getting CORS error, image attached below

We are unable to add extra properties also getting CORS error

If is necessary to execute some code in order to reproduce the bug, paste it here below:

var editor = grapesjs.init({
      container: '#gjs',
      style: '.txt-red{color: red}',
      plugins: ['gjs-preset-newsletter', 'gjs-blocks-basic'],
      pluginsOpts: {
        'gjs-blocks-basic': { blocks: ['video'] }
      },
      assetManager: {
        assets: [
          'https://siteurl.edu/uploads/screen-shot-2017-11-29-at-9-17-08-am.png',
          'https://siteurl.edu/uploads/screen-shot-2017-11-16-at-9-21-05-am.png',
        ],
        storeOnChange: true,
        storeAfterUpload: true,
        upload: "/upload-editor-media",
      },
      storageManager: {
        type: 'remote',
        stepsBeforeSave: 2,
        storeComponents: false,
        storeStyles: true,
        storeHtml: true,
        storeCss: true,
        contentTypeJson: true,
        headers: {
          Authorization: `Bearer ${this.currentUser.accessToken}`
        },
        Pragma: 'no-cache',
        Expires: '0',
        urlStore: "https://a8devapi.azurewebsites.net/api/EC_Email_Templates/GrapeJS",
        urlLoad: "/load-template/2",
        params: {},   // For custom values on requests

      }
    });



by using this code getting error CORS, like below

![Screenshot (54)](https://user-images.githubusercontent.com/74088643/157727897-e499b4ca-554e-4578-bda9-2e8f4ef15d83.png)



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