使用命令如下:
source /opt/ros/foxy/setup.bash-
export TURTLEBOT3_MODEL=burger-
ros2 launch turtlebot3_gazebo empty_world.launch.py
报错信息:
[ros2-3]:node not found
[error] [ros2-3]:process has died[Pid 3051, exit code1, cmd ‘ros2 param set gazebo use_sim_tim True’
求助该问题需要怎么解决。