Error message while backing up

Error during backup. Should I be worried? Is there anything I need to do to ensure the completeness of the backup?

The popup error message said:
[17:07:52] C:\Users\gina\OneDrive Backup operations returned an error:
ERROR: Failed to upload the chunk (some big hex number). Maximum backoff reached

The log showed:
16:53:53.003 Packed Pictures/Camera Roll/20121021_014929286_iOS.MOV (300767495)
17:07:52.112 Failed to upload the chunk 77a431a64091862468e26b930fbbb201d60923351f78941ff387eb9be89ea3f9: Maximum backoff reached
17:07:52.117 Incomplete snapshot saved to C:\Users\gina\OneDrive/.duplicacy/incomplete

Perhaps some temporary OneDrive issue that lasted long than the backoff mechanism could handle, but please let me know if it happens consistently when you try to run the backup again.

After the initial backup is done you can run this command using the CLI executable to make sure the backup is good:

duplicacy check -r 1 -files

The CLI executable can be found under either C:\Program Files (x86)\Duplicacy or C:\Users\username\AppData\Local\Duplicacy, depending on if you installed Duplicacy for all users or for the current user only.