java.util.ConcurrentModificationException in activity onCreate

Question

In a recent release where I added MoPub via Admob ad mediation I am seeing a bunch of ConcurrentModificationException in crash logs. It all seems to be native code and I am

Answer 1

In our case, we are only seeing the crash with

com.google.firebase:firebase-analytics:17.2.2 

reverting to 17.2.1 has fixed the problem

This happens too if you are using firebase-core:17.2.2, because firebase-analytics is the same library rebranded. Take into account that as per official docs, current usage of firebase-core is deprecated -> https://firebase.google.com/support/release-notes/android#latest_sdk_versions