Server clocks unsynchronized
Server clocks on replication nodes must be synchronized. Clock times should not differ by more than 60 seconds. Use the Manage the system > Maintenance > Database replication).
page to view the status of the replication nodes (If the server clocks of the replication nodes start to drift out of synchronization by too many seconds, the time status on the Database replication page displays this issue. You can then view the status of each node, note the time difference, and see if the server can be contacted.
You must update the time settings manually to resynchronize server clocks.