[MM3-users] Flushing/syncing hyperkitty with mailman

I've got mailman running on Ubuntu 14.04, with systemd service files to govern the mailman and hyperkitty qcluster processes.

I notice in the systemctl status call for the qcluster command that there are a bunch of errors like:

[Q] ERROR Failed [rebuild_thread_cache_votes] - Thread matching query does not exist. [Q] INFO Process-1:1 processing [rebuild_email_cache_votes] [Q] ERROR Failed [rebuild_email_cache_votes] - Email matching query does not exist. [Q] INFO Process-1:2 processing [rebuild_thread_cache_votes] [Q] ERROR Failed [rebuild_thread_cache_votes] - Thread matching query does not exist. [Q] INFO Process-1:3 processing [rebuild_email_cache_votes] [Q] ERROR Failed [rebuild_email_cache_votes] - Email matching query does not exist. [Q] INFO Process-1:4 processing [rebuild_thread_cache_votes] [Q] ERROR Failed [rebuild_thread_cache_votes] - Thread matching query does not exist.

Is there something more I should be doing to sync hyperkitty's database with mailman? I've got the crontab file in place, and that appears to be running without error. Anything else?

Thanks, Eric