gpgs login error (crash) #54

Hi ,I'm a game developer in korea.
I have the following issues.

1. It works without trouble for about one week after launch.
2. A week after the end of the week (June 15), some users reported that the game was running without any problems, the game suddenly crashed and could not run again.
3. Android Vital has recorded the following logs.

java.lang.IllegalStateException:
at com.google.android.gms.common.internal.zze.zzw (Unknown Source: 60)
at com.google.android.gms.common.internal.zzi.zzamc (Unknown Source: 51)
at com.google.android.gms.common.internal.zzh.handleMessage (Unknown Source: 270)
at android.os.Handler.dispatchMessage (Handler.java:105)
at android.os.Looper.loop (Looper.java:164)
at android.app.ActivityThread.main (ActivityThread.java:6938)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.Zygote $ MethodAndArgsCaller.run (Zygote.java:327)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1374)

4)On June 15th, two people were reported to have had this issue on Android vital. And, over the weekend, the number increased to about 20 people.
4) On June 18, one of the developer's devices encountered this issue. And it happened in the device of the designer....
6) Debugging the app to the Android studio from the device where the issue occurred, and checking that it is crashing after GPGS login processing.
7) We replaced the GooglePlayGameService sample file (Java / C ++ version) provided by Google with the APPID and PackageID of the issueed app, then build and run it on the device where the issue occurred.(Overwrite)
8) Exception 8 is logged in the logcat, or the app crashes.
9) We changed the sample's APPID and PackageID to APPID and PackageID of other apps that do not have issues. In this case, the app worked well.
10) Sometimes, after uninstalling and reinstalling the app, it works fine.
11) From June 19, the number of issues in the Android Vital has suddenly decreased.
12) The issue does not occur for two weeks.
13) The issue occurred again on Saturday (about 7th) last week.
14) The problem occurred in the previous version without problems.
15) Issue records have continuously increased in Android vital. After all, I updated the version that removed GPGS.
16) Yesterday (Monday) After 7 pm, GPG login is not available in all versions.
(No code modification).

I want to know the cause and solution of this issue.

I need help urgently.
(The game has been launched.)