From the log it seems that the first issue is that your user is lacking the required permissions.
Login as your Klipper username and call:
sudo usermod -a -G dialout $USER
sudo usermod -a -G tty $USER
Log out and back in, then try again.
From the log it seems that the first issue is that your user is lacking the required permissions.
Login as your Klipper username and call:
sudo usermod -a -G dialout $USER
sudo usermod -a -G tty $USER
Log out and back in, then try again.