[K12OSN] Squidguard error from Cron?

[joseph.bishay at utoronto.ca]

Hello,

I'm getting this error emailed to root from the cron job relating to
updating squidguard_blacklists - what does it mean?

Subject:  Cron <root at k12server>  /usr/sbin/update_squidguard_blacklists
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(150)

Thanks,

Joseph