Gauge indicator not displaying value

I’m trying to show the available disk capacity using gauge panel. My data source is PostgreSQL.
I have two queries. Query A is for the value (free disk space) and query B for setting the Max (total disk capacity). However, the gauge only displays the value as text but not on the gauge indicator.
Grafana v9.2.2

Welcome @devangvira to the Grafana forum.

Can you inspect the query with the query inspector? Perhaps your values being returned by the queries are strings and not numbers?

The values returned by the query are numbers and not Strings.

I was able to solve this by setting the value of Min as ‘0’.