[joint_state_publisher_gui-5] process has died

1.删除urdf中的中午注释

2.

cd /opt/ros/melodic/lib/python2.7/dist-packages/joint_state_publisher_gui

sudo gedit __init__.py

在最前面加import sys
reload(sys)
sys.setdefaultencoding("utf-8")

3.

 File "/opt/ros/melodic/lib/joint_state_publisher_gui/joint_state_publisher_gui", line 41, in

按住ctrl 加该文件进入

修改最前面为

#!/usr/bin/env python2.7

# -*- coding: utf-8 -*-