I\'m facing the same issue as in Stack Overflow question "Google Play services are updating" in Google Maps API.
Unfortunately, out of nowhere, some o
AFAICT there is nothing an app developer can do to fix it. As @xomena mentions in her answer Google is working on it.
Just to add the complete solution for an end-user here:
Settings > Apps & Notifications > App > Google Play Services > StorageClear CacheManage Space and click Clear all dataBe aware that the issue reappears if you reboot your device
Someone created a video you can refer your users to at https://youtu.be/VgMtZnyem5Y