[mbot_bringup-2] process has died [pid 23791, exit code -6, cmd /home/wyw/catkin_ws/devel/lib/mbot_bringup/mbot_bringup __name:=mbot_bringup __log:=/home/wyw/.ros/log/666f9f66-85eb-11ed-ab36-24ec993a1445/mbot_bringup-2.log].
log file: /home/wyw/.ros/log/666f9f66-85eb-11ed-ab36-24ec993a1445/mbot_bringup-2*.log