Currently, I am getting used to Artery to simulate platoons based on the ETSI standard. I finished installing and setting up Artery on my VMWare Ubuntu 20.04.
However, when running Artery as instructed in here, I met an issue as below. I followed this link to fix, but the solution was not mentioned.
Much appreciate, Huy Nguyen.

I think I found the way to fix the issue. Earlier, I downloaded SUMo with the old version that comes with Ubuntu 20.04 (by
sumo apt-get install sumo sumo-tools sumo-docsonly) I fixed the issue by downloading the newest version of SUMO:Thank you @Ventu for your help.