Gboard is Google's Android keyboard program. Sometimes it can malfunction and kick a "Gboard Not Working" error repeatedly. Try each of the following solutions in order until the issue is solved:
1. Restart the tablet
- Hold Power > Select Restart
- Settings > Apps
- Select Gboard
- Select Storage > Clear Cache
3. Uninstall Updates
- Settings > Apps > Gboard
- Click the 3 vertical dots in the upper right > Uninstall updates
- Settings > Apps > Gboard
- Force Stop > OK
If solutions 1-4 do not solve the Gboard pop up issue, see the following help article for additional solutions: https://www.guidingtech.com/gboard-not-working-android/