Firebase Root View Controller Not Found Warning

Question

I got a strange warning from Firebase Analytics today. It is:

 [Firebase/Analytics][I-ACS031011] Root view controller not found

Answer 1

Updating the firebase and other related dependencies to latest version fixed the issue on my project.

 - Firebase/Core (4.2.0):
 - FirebaseAnalytics (= 4.0.3)
 - FirebaseCore (= 4.0.7)

Answer on other thread: https://stackoverflow.com/a/46333312/342794