im having this issue for the past few day, when i try to run backup on kaseya after a while i got this message from backup logs 

(backup failed - read error - failed to perform the back operation).

is there anyone that could help me to resolve or check other things that i need?

im using Thecus N5500 as backup NAS, i already update the firmware but still i get the same result. 

on the Thecus there was no any backup errors on system log.