启动gazebo仿真环境报错[model-4] process has died
model-4\] process has died \[pid 2059, exit code 1, cmd /opt/ros/melodic/lib/gazebo_ros/spawn_model -urdf -model mycar -param robot_description __name:=model __log:=/root/.ros/log/8842dc14-877c-11ee-a9d9-0242ac110002/model-4.log\]. log file: /root/.ros/log/8842dc14-877c-11ee-a9d9-0242ac110002/model-4\*.log  **出现报错原因：** ubuntu18.04版本在launch文件中添加中文注释有可能导致这个错误。 **解决方法：** 主要是编码老问题，找到上面出现的/usr/lib/python2.7/xml/etree/ElementTree.py文件，使用vim文本编辑器打开，终端命令是 sudo vim /usr/lib/python2.7/xml/etree/ElementTree.py **加入以下代码** reload(sys) sys.setdefaultencoding("utf-8") **加入之后的程序格式如下：** 