Problem with Get Started : Controlling heterogeneous networks using SDN-WISE and ONOS

[kuliahbaen]

Hello Guys,
I'm new and really interested in SDN-WISE simulation. I try your interesting guide: https://sdnwiselab.github.io/docs/guides/GetStartedONOS.html

All the steps were clear and easy to understand, but I have a problem with the last step to run the simulation. When I start the simulation, I have a notification that there is some error that I have no idea how to solve it. here is the notification

There is an error in the cooja simulator as above captured, but I think its fine (no error) in Onos as below:

I need some suggestions on how to solve the cooja simulation problem.

thank you