Influxdb graph Sonoff TH Tasmota mqtt 2.4 no data, always gives value 0

I might be missing something here :sunglasses:, but I don’t understand why you are refering to Grafana, while your sitemap seems to be refering to the OH built-in element-type Graph:

To my knowledge, that has nothing to do with Grafana. For Grafana, you need something like:

Webview label="Climate Livingroom" url="/static/grafana.html?kiosk&dashboard=openhab&theme=dark&from=Climate_Period1&panel=Climate_Panel1" height=12 icon="line"

To refer to a panel and graph defined in Grafana.