Sorry for this delay... Yes I tried with sudo and it tells me this.
After generating some locales by using export LANG=C LANGUAGE=C LC_ALL=C LC_MESSAGES=POSIX and restart. It works, whether plug in the usb from Lidar to RPi3 after the RPi3 is started, then I use this little script
sudo chmod 666 /dev/ttyUSB0
roslaunch rplidar_ros rplidar.launch
but it fails appears this message
Do you know what is going on with this second issue?
Thank you very much @LanderU!!