Little surprised nobody answered this with anything useful. I just dug my Odyssey X86J4125 out cuz I need it for something. Never tried to use the Arduino header but ran into the same problem. Took me a bit to figure out, I guess some Arduino versions print different errors…
Problem is you likely don’t have serial port permissions. I run Manjaro on everything and I always run into this.
$ sudo usermod -aG uucp $USER
or
might change uucp to dialout depending on your flavor of Linux.