Desde a semana passada, nosso aplicativo tem muitas exceções sobre isso. Usamos o GMS 11.0.2

Fatal Exception: java.lang.IllegalStateException: Results have already been set
   at com.google.android.gms.common.internal.zzbo.zza(Unknown Source)
   at com.google.android.gms.internal.zzbbl.setResult(Unknown Source)
   at com.google.android.gms.internal.zzbbf.zzz(Unknown Source)
   at com.google.android.gms.internal.zzbbf.zzf(Unknown Source)
   at com.google.android.gms.internal.zzbbf.zzb(Unknown Source)
   at com.google.android.gms.internal.zzbav.zza(Unknown Source:3)
   at com.google.android.gms.internal.zzbdk.zzb(Unknown Source)
   at com.google.android.gms.internal.zzbdk.zzrR(Unknown Source)
   at com.google.android.gms.internal.zzbdk.onConnected(Unknown Source)
   at com.google.android.gms.common.internal.zzaa.onConnected(Unknown Source)
   at com.google.android.gms.common.internal.zzn.zzsR(Unknown Source:2)
   at com.google.android.gms.common.internal.zze.zzy(Unknown Source)
   at com.google.android.gms.common.internal.zzh.handleMessage(Unknown Source:4)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:148)
   at android.os.HandlerThread.run(HandlerThread.java:61)

o relatório de log por malha.

usamos firebase e a versão gms é 11.0.2

como podemos verificar esses problemas?

e o mesmo problema na versão 11.8.0 do gms

java.lang.IllegalStateException: Results have already been set

   at com.google.android.gms.common.internal.zzbs.zza(Unknown Source)
   at com.google.android.gms.common.api.internal.zzs.setResult(Unknown Source)
   at com.google.android.gms.common.api.internal.zzm.zzy(Unknown Source)
   at com.google.android.gms.common.api.internal.zzm.zzf(Unknown Source)
   at com.google.android.gms.common.api.internal.zzm.zzb(Unknown Source)
   at com.google.android.gms.common.api.internal.zzc.zza(Unknown Source:3)
   at com.google.android.gms.common.api.internal.zzbr.zzb(Unknown Source)
   at com.google.android.gms.common.api.internal.zzbr.zzakz(Unknown Source)
   at com.google.android.gms.common.api.internal.zzbr.onConnected(Unknown Source)