Packaging up Create-react-app and electron error

I am packaging up my electron app electron-builder" after I build the Create-react-app react-scripts build.

The error I receive when I try to run my packaged app is:

Not allowed to load local resource: 
file:///Users/profile/app/dist/mac/App.app/Contents/Resources/app.asar/build/index.html

Am I missing a step, to package the react app with electron?

the main.js is one level deeper in from the build folder,

Here is the url in my main.js

const startUrl = process.env.ELECTRON_START_URL || url.format({
        pathname: path.join(__dirname, '/../build/index.html'),
        protocol: 'file:',
        slashes: true
  });

[ryan-ds]

Still not working. I’m getting a blank screen

[develar]

Please consider to use short form like file://${__dirname}/../build/index.html

Have you read https://medium.com/@kitze/️-from-react-to-an-electron-app-ready-for-production-a0468ecb1da3? What electron-builder version do you use?