I can't sign in google play when user click button

[Qusdrok]

i created a button in my game, if user click to it then it will sign in google, but while I test I have encountered this error on monitor tools of unity
my error got:
java.lang.ClassNotFoundException: Didn't find class "com/google/android/gms/games/Games"

I fixed it in a few ways on google but it still can't be fixed, why?
i change minify release and debug from none -> proguard, enable "proguard file"
this is all lines in my file proguard
-keep class com.google.android.gms.games.leaderboard.** { ; }
-keep class com.google.android.gms.games.snapshot.* { ; }
-keep class com.google.android.gms.games.achievement.* { ; }
-keep class com.google.android.gms.games.event.* { ; }
-keep class com.google.android.gms.games.stats.* { ; }
-keep class com.google.android.gms.games.video.* { ; }
-keep class com.google.android.gms.games. { ; }
-keep class com.google.android.gms.common.api.ResultCallback { ; }
-keep class com.google.android.gms.signin. { ; }
-keep class com.google.android.gms.dynamic.* { ; }
-keep class com.google.android.gms.dynamite.* { ; }
-keep class com.google.android.gms.tasks.* { ; }
-keep class com.google.android.gms.security.* { ; }
-keep class com.google.android.gms.base.* { ; }
-keep class com.google.android.gms.actions.* { ; }
-keep class com.google.games.bridge.* { ; }
-keep class com.google.android.gms.common.ConnectionResult { ; }
-keep class com.google.android.gms.common.GooglePlayServicesUtil { ; }
-keep class com.google.android.gms.common.api. { ; }
-keep class com.google.android.gms.common.data.DataBufferUtils { ; }
-keep class com.google.android.gms.games.quest. { ; }
-keep class com.google.android.gms.nearby. { *; }

I am using:

• Unity 2019.4.2f1
• Google play services 0.10.11

PLEASE HELP ME :( I REALLY NEED HELP, THANK YOU FOR READING, HAVE A NICE DAY

[rizqirizqi]

I got that error yesterday after upgrading Unity to 2019.4.15f1. Several hours of trying different configurations but still stuck with that error. Then, when I check git status, I found out that Unity deleted some files in /Assets/Plugins/Android/*. Just recover the deleted files and it runs fine.

[Qusdrok]

oh thank you so much bro Vào CN, 22 thg 11, 2020 vào lúc 13:45 Mgs. M. Rizqi Fadhlurrahman < notifications@github.com> đã viết:

…

I got that error yesterday after upgrading Unity to 2019.4.15f1. Several hours of trying different configurations but still stuck with that error. Then, when I check git status, I found out that Unity deleted some files in /Assets/Plugins/Android/*. Just recover the deleted files and it runs fine. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#2971 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AKFQASNIJD2QVNQRQJ4RCATSRCXPZANCNFSM4TWHRUUA> .