UserWarning: icon “/opt/ros/melodic/share/rqt_virtual_joy/resource/input-gaming.png“ not found 에러 해결법

rqt_virtual_joystick 폴더를 다운받아 복사한다.

cd Downloads
git clone https://github.com/aquahika/rqt_virtual_joystick.git
sudo cp -r ~/Downloads/rqt_virtual_joystick/resource /opt/ros/melodic/share/rqt_virtual_joy/
rm -rf ~/Downloads/rqt_virtual_joystick

출처 : https://blog.csdn.net/qq_39531155/article/details/114679115