Issue after submitting my app to TestFlight

Question

We have discovered one or more issues with your recent delivery for \"AppName\". To process your delivery, the following issues must be corrected:

Invalid Bu

Answer 1

For me the following worked:

1. i updated cocoapods if You have troubles doing so this link may help

2. deleted MyProjectTests (that i wasn't using)

3. deleted my Pods/ folder and Podfile.lock

4. made pod install

5. rebooted my mac

and the problem is gone

Answer 2

I have just seen the problem after install the app in a real device, but crashed (in the simulator works). My app missing a library installed with Cocoapods.