hello! I'm having the same error when trying to run it on arch linux.
I added
echo "ROOTDIR IS ${rootdir}"
and got
ROOTDIR IS /home/me/Downloads/turbo-racer-3000-1.0
You can find a Arch-ready bundle at the following address:
https://gitlab.com/binary-ec/turbo-racer/-/raw/main/turbo-racer-3000-1.0-archlin...