I\'m using Ionic to build an html app for iOS. I\'ve registered an app on iTunes Connect.
All goes well in Xcode until I upload to the App Store. I get the following
For those who are seeing this answer after June 2020, I'm running XCode 11, and I got this error because I forgot to make an app in App Store Connect:
https://appstoreconnect.apple.com/
If you have XCode 11, under "Signing & Capabilities" -> "Automatically manage signing", it'll solve 90% of the problem for you, but the other 10% is just logging into your developer account, going to App Store Connect -> Apps -> (Blue "+" icon), then select a Bundle ID that matches your Bundle Identifier back in XCode.