title: Xcode App Store Connect Operation Error: Could not find or load main class 12
body: <p>I'm trying to upload my build to the App Store using Xcode 12 and I receive the error message:</p>
  <blockquote>
  <p>App Store Connect Operation Error</p>
  <p>Could not find or load main class 12</p>
  </blockquote>
  <p>The app is built with SwiftUI. Has anyone faced a similar issue?</p>