Hello Carlos Carvalho, thank you for your response. As you said Heroku create -b command has to point to the build pack. By the way, this is a build in command for making our application live on Heroku and there is no need to predict that command what actually is do. Also, you can check the official site for deploying react app on Heroku you see the same commands: https://blog.heroku.com/deploying-react-with-zero-configuration

Regards,

Ajay Singh