iTunes Connect Errors occurred in the app thinning process, and your app couldn’t be thinned?

Question

I Uploaded the build via Xcode Yesterday it worked fine but while uploading today the build is uploading perfectly but after 10 minutes i got a email form apple stating that

Answer 1

Apple recommends to test by archiving the app first and then exporting the app for ad hoc distribution. If there are errors, you can then see this in the logs, you can access them from the export dialog.

My favorite solution, if there is no error during export:

1. update cocoapods
2. run pod install
3. clean the project and resubmit

It just worked for me, no clue why, but it might be worth a try instead of wasting hours on finding a solution for a non existant problem ;)