Build is not working. Error: exportArchive Copy failed

[bobandrew]

If you are looking for help, please confirm the following...

• I confirm I have searched the Docs, Codemagic Sample Projects, and GitHub Discussions.
• I confirm the software versions on my local computer match the ones in CI environment (e.g. Xcode version, Gradle version). See here
• I confirm I am able to do a fresh clone of the repository and build the project on my local computer.

Which mobile framework are you using?

Flutter (Dart)

Steps to reproduce

I'm trying to build my project and on the "Flutter build ipa and automatic versioning" step I get error:
Encountered error while creating the IPA:
error: exportArchive Copy failed
A few days ago everything worked fine, but now something broke. Could you please tell me what the matter is?

---

Archiving ru.devpark.aquababyclub.customer...
ios/Runner/AppDelegate.swift uses the deprecated @UIApplicationMain attribute, updating.
Upgrading Runner.xcscheme
Automatically signing iOS for device deployment using specified development team in Xcode project: 6FQ5MB9H3H
Running pod install... 114.9s
Running Xcode build...
Xcode archive done. 182.5s
✓ Built build/ios/archive/Runner.xcarchive (550.6MB)

[✓] App Settings Validation
• Version Number: 3.29.874
• Build Number: 274
• Display Name: A.B.CLUB
• Deployment Target: 13.0
• Bundle Identifier: ru.devpark.aquababyclub.customer

[!] App Icon and Launch Image Assets Validation
! Launch image is set to the default placeholder icon. Replace with unique launch image.

To update the settings, please refer to https://flutter.dev/to/ios-deploy

Building App Store IPA... 7.9s
Encountered error while creating the IPA:
error: exportArchive Copy failed

Try distributing the app in Xcode:
open /Users/builder/clone/fitness365/build/ios/archive/Runner.xcarchive

Expected results

I want to fix build process.

Actual results

I have error exportArchive Copy failed.

Build id (optional)

67f511c16e0449e7ef15911c

[bobandrew]

I changed xcode from 16.3 to 16.2 in my codemagic.yaml and the error went away, everything works now.