Queries show as successful but return no data in the Data tab

Hello, Can anyone help me? I am stuck with a weird problem.

I am using Grafana for Spark logging, and everything was working fine. I built some dashboards, but suddenly it stopped working. I was writing queries in KQL, and now, when I go to the Query Inspector, it shows that the query is successful with status code 200. However, when I go to the Data tab, it says “No Data.”

If you can help me, please let me know.