NullPointerException on FirebaseMessagingService.zzo(Unknown Source)

Question

Does anyone knows about this crash?

Fatal Exception: java.lang.NullPointerException
       at com.google.firebase.messaging.FirebaseMessagingService.zzo(Unknown Source)
       at com.google.firebase.messaging.FirebaseMessagingService.zzn(Unknown Source)
       at com.google.firebase.messaging.FirebaseMessagingService.zzm(Unknown Source)
       at com.google.firebase.iid.zzb$2.run(Unknown Source)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
       at java.lang.Thread.run(Thread.java:856)

It doesn't happen that much, about 0.1% of sessions.

Reported environments: GI-I9500_TMMARS / Android 4.1.1.

Answer 1

This problem is discussed as an issue for the Quick Start project. Comments there from the Firebase support team indicate the problem is fixed in SDK version 9.4.0. Are you building with that version?