N/A metric data after save

[LithiumNL]

Hi!

This issue is exactly the same as issue 30

Everything works, you can see the values after you add the query. After you save and go back to your made dashboard all values are on N/A. You can edit the panel again and select the value and everything is fine again until you save and go back to your dashboard.

Working on Grafana 9.2.0