Personal Team is not enrolled in the Apple Developer Program

I am trying to upload the app to app store but getting this error on validating the app or distribution.

Team "Username (Personal Team)" is not enrolled in the Apple Developer Program. Distribution requires enrollment in the Apple Developer Program. Visit https://developer.apple.com/account to enroll.

I am new iOS development and app built with the react native framework and publishing the app using XCode 11.2.1. I am using a team member account as an app manager.

I find this Apple Developer link for the known issue but I don't understand the solution they are providing. Can any body explain it.