No data in user search log

My user search log does not appear to capture information about searches. I don’t require anyone to log in, but I’ve conducted searches while logged in, and those queries don’t appear either.

I’ve recently added the Yoast/Relevanssi query fix to my functions.php file; if that’s the problem, then I’ll wait.

I do have the “log user searches” button checked.

When I tried to reset the search logs, I had the following result: “Clearing the logs failed.”

I’m up-to-date on WordPress and Relevanssi, and have had no problems running any searches.

Does anyone have other suggestions for me to try?

Thanks.