Event title:Remote Backup Error

Hello everyone. I am suddenly receiving this backup error when my primary NAS synchronizes with my secondary NAS. The remote backup set over SSH via IP address. I have not had any issues for a long time until now. Below is the error:

Event description:An error occurred for the remote backup job named HomeFolders. Please check the backup job detail.


Event code:1400

Event time:12-09-2018 11:00:22 PM

Firmware version: 2.11.178

Any help would be greatly appreciated. Thank you.