Hi,
I am receiving often Duplicacy errors after I wake my computer (Win10) from sleep, but later the same tasks run all fine. My guess is that Duplicacy tries to run the tasks before all services (network etc) are ready.
You can add a per job registry value under HKCU\Software\Duplicacy named WakeUpDelay that is set to the number of seconds you want to wait before running the backup. This is explained in the last section of the user guide: https://duplicacy.com/guide.html