Recently I was working on project using apple account with no active subscription (free developer account) which contained the firebase pods only and after upgrading my device to iOS 13.3.1 my app started crashing with this reason:
Library not loaded: @rpath/FBLPromises.framework/FBLPromises
and I found out that:
Apple blocked utilising external frameworks on free accounts with 13.3.1 upgrade.
so I used an apple developer account with an active subscription and the problem solved.
But Why Apple blocked utilising external frameworks?