Error when restarting LSWS at command line

When I restart LSWS in the terminal, I get this error:

“Warning: The unit file, source configuration file or drop-ins of lsws.service changed on disk. Run ‘systemctl daemon-reload’ to reload units.”

Running the command it suggests has no effect.

I didn’t use to get this error.

How do I determine the cause, and what does it mean?

Sorry. I didn’t intend to post this in Bug Report. Not sure how to move it.