songwon@songwon-IdeaPad-L3-15IML05:~$ roslaunch turtlebot3_bringup turtlebot3_robot.launch

... logging to /home/songwon/.ros/log/f3441c54-32eb-11ec-859b-909f33eebd32/roslaunch-songwon-IdeaPad-L3-15IML05-3253.log

Checking log directory for disk usage. This may take awhile.

Press Ctrl-C to interrupt

Done checking log file disk usage. Usage is <1GB.

 

started roslaunch server http://192.168.0.16:37959/

 

SUMMARY

========

 

PARAMETERS

 * /rosdistro: kinetic

 * /rosversion: 1.12.17

 * /turtlebot3_core/baud: 115200

 * /turtlebot3_core/port: /dev/ttyACM0

 * /turtlebot3_core/tf_prefix:

 * /turtlebot3_lds/frame_id: base_scan

 * /turtlebot3_lds/port: /dev/ttyUSB0

 

NODES

  /

    turtlebot3_core (rosserial_python/serial_node.py)

    turtlebot3_diagnostics (turtlebot3_bringup/turtlebot3_diagnostics)

    turtlebot3_lds (hls_lfcd_lds_driver/hlds_laser_publisher)

 

ROS_MASTER_URI=http://192.168.0.16:11311

 

process[turtlebot3_core-1]: started with pid [3270]

process[turtlebot3_lds-2]: started with pid [3271]

process[turtlebot3_diagnostics-3]: started with pid [3272]

[ERROR] [1634875006.460946055]: An exception was thrown: open: No such file or directory

[turtlebot3_lds-2] process has died [pid 3271, exit code 255, cmd /opt/ros/kinetic/lib/hls_lfcd_lds_driver/hlds_laser_publisher __name:=turtlebot3_lds __log:=/home/songwon/.ros/log/f3441c54-32eb-11ec-859b-909f33eebd32/turtlebot3_lds-2.log].

log file: /home/songwon/.ros/log/f3441c54-32eb-11ec-859b-909f33eebd32/turtlebot3_lds-2*.log

[INFO] [1634875006.802314]: ROS Serial Python Node

[INFO] [1634875006.808867]: Connecting to /dev/ttyACM0 at 115200 baud

[ERROR] [1634875006.811126]: Error opening serial: [Errno 2] could not open port /dev/ttyACM0: [Errno 2] No such file or directory: '/dev/ttyACM0'

[turtlebot3_core-1] process has finished cleanly

log file: /home/songwon/.ros/log/f3441c54-32eb-11ec-859b-909f33eebd32/turtlebot3_core-1*.log

^C[turtlebot3_diagnostics-3] killing on exit

shutting down processing monitor...

... shutting down processing monitor complete

done

 

 

이렇게 에러가 뜹니다. 해결방안이 있나요?