一、问题描述：
joes@joes-PC:~/jiao/ROS_Projects/05_aotexueyuan_Project$ roslaunch ros23_urdf02_gazebo demo01_helloworld.launch
… logging to /home/joes/.ros/log/194743e4-922e-11ec-a5c5-84a938321ff7/roslaunch-joes-PC-6862.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is
Original: https://blog.csdn.net/jiaostyle/article/details/123033225
Author: joesrobot
Title: [spawn_model1-4] process has died [pid 6923, exit code 1, cmd /opt/ros/melodic/lib/gazebo_ros/spawn_
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