[CentOS-mirror] RSYNC Cron Job Failing (Unknown module 'CentOS')

Hello,

today we noticed that our sync cron generating the following error.

@ERROR: Unknown module 'CentOS'
rsync error: error starting client-server protocol (code 5) at 
main.c(1516) [Receiver=3.0.9]


Host IP: 62.90.37.3

Thanks,
Tareq