Here is the email form Apple:
Dear developer,
We have discovered one or more issues with your recent delivery for "[MyApp]". To process your delivery, the following issues must be corrected:
Invalid Bundle - The app cannot be processed because of a fault in the bitcode bundle generation. The problem has been resolved in Xcode 7.3 and later versions. Rebuild the app with the latest Xcode and resubmit to the App Store.
Once these issues have been corrected, you can then redeliver the corrected binary.
Regards,
The App Store team
The thing is we are already using latest Xcode (8.3).
The archive works and the upload to iTunesConnect without errors.
But the build doesn't appear and we get the email above form Apple.
It looks like the issue happens when Apple processes the build, unfortunately we have absolutely no logs of what is happening :/
Itunes connect is not very helpful neither :
Is anyone facing the same issue ?