Test Apple verification process

Good morning everyone,


I've uploaded a new build version of my app on App Store Connect, and I've received the following message:


{

Dear Developer,


We identified one or more issues with a recent delivery for your app, "****". Please correct the following issues, then upload again.


Non-public API usage: The app references non-public symbols in ****: _getcontext, _makecontext, _setcontext

}


I've added some external libraries, so I need to understand which one is causing this issue.

Is there any way to test this Apple build verification process multiple times without trying to release a new version on testFlight every time?


Xcode building doesn't give me any error.


Thank you very much