Help solve the problem Android applications

Hello everyone, I am from Kazakhstan
When launching applications, a critical error crashes
Checked applications through Robotest

Here is the log:
java.lang.IllegalArgumentException: com.google.android.vending.a.a.b: single trailing character at offset 384
FATAL EXCEPTION: MainThread-UE4
Process: com.enostudio.ballsbox, PID: 12730
java.lang.IllegalArgumentException: com.google.android.vending.a.a.b: single trailing character at offset 384
at com.google.android.vending.a.d.a(LicenseChecker.java:119)
at com.google.android.vending.a.d.(LicenseChecker.java:94)
at com.google.android.vending.expansion.downloader.a.e$c.run(DownloaderService.java:766)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6718)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: com.google.android.vending.a.a.b: single trailing character at offset 384
at com.google.android.vending.a.a.a.a(Base64.java:559)
at com.google.android.vending.a.a.a.a(Base64.java:474)
at com.google.android.vending.a.a.a.a(Base64.java:420)
at com.google.android.vending.a.d.a(LicenseChecker.java:110)
… 9 more