Spark logs "No data" issue

Hello Everyone,

I hope you all are doing well.

Today is my first day in the Grafana Community, and this is my first question to all of you.

I was monitoring some Spark logs with Log Analytics and then connected Log Analytics with Grafana. Initially, it was working fine, and I created some dashboards smoothly using KQL. Now I am encountering an issue with the data: I did nothing, but suddenly all dashboards show no data in response. When I write table names in the queries, it shows all the tables and auto-completes, but after running the query, it shows no data.

Everything is fine with the connection, and I can also see some other tables from Databricks, but the custom Spark tables have had issues for the past two days. Can anyone guide me on what’s wrong here? How can I fix it?