Unfortunately, we have not been able to reproduce the issue you are experiencing at the moment. It seems to be a database-related problem, which is causing the dashboard data to not display properly.
However, we have had users report this issue before, and they were able to resolve it. You can try the following steps to see if it helps in your case:
Command:
sudo service pironman5 stop
sudo rm -fr /var/lib/influxdb/data/pironman5
sudo rm -fr /var/lib/influxdb/wal/pironman5
sudo service pironman5 start