Why odk briefcase shows success with error

1. What is the problem? Be very detailed.
I am trying to pull some submissions from my server and push to another server. I have some data in one project of Kobotoolbox and want to send data in another kobotoolbox project using odk briefcase v1.18.0. But when sending data it shows success with error. attached is the log.

2. What app or server are you using and on what device and operating system? Include version numbers.
I am using odk briefcase v1.18.0. Trying it with windows 10, 64bit. Trying one kobotoolbox user to another kobotoolbox user.

3. What you have you tried to fix the problem?

4. What steps can we take to reproduce the problem?
Go to odk briefcase v1.18.0 pull data from one user of kobotoolbox and push to another user of kobotoolbox.

5. Anything else we should know or have? If you have a test form or screenshots or logs, attach below.
Log attachedLog_send.txt (1.1 MB)

For KoBoToolbox questions you may want to check their support page or ask on their forum.

Thanks. Much appreciated