We are setting up AB Testing in our React Project with GA4. In the Data Sources we are getting this error. "This query had an error with it the last time it ran: No rows returned" Can anyone point me in a direction for debugging? How do we get a more specific error message than this?

you can go to data sources -> (your data source) -> and then edit the assignment queries

I'm in that section and I am able to edit, but I don't see a more specific error message so I don't know which edit to make.