Bar Gauge dont show null/no data label - influxdb telegraf data source

hii, im using grafana v9 with telegraf influxDb data source

im trying to monitoring Ping to certain IPs with bar gauge panel. but when pinging IP that result in nodata/null value ( rto / unreachable ) , the label on panel is disapear, i want to still display it so i can know what IP is down ( rto / unreachable )