Hello
This error is caused by Google Play Store bug' please follow the instructions below fix this error.
- Go to settings.
- Under "ACCOUNTS" click google.
- Touch the account that is associated with google play store.
- Touch the action/more option button top right of your tablet screen.
- Choose Remove account.
- Reboot your tablet.
- Open google play store and add your google account again.
This should be able to resolve this error.