Arduino运行ROS_lib的示例程序helloworld报错Creation of publisher failed: unknown error handler name ‘rosmsg‘

问题：

终端运行下面代码时

rosrun rosserial_python serial_node.py /dev/ttyUSB0

报错：

[ERROR] [1605179908.248997]: Creation of publisher failed: unknown error handler name 'rosmsg'
[ERROR] [1605179909.251662]: Tried to publish before configured, topic id 125
[ERROR] [1605179910.262239]: Tried to publish before configured, topic id 125
[ERROR] [1605179910.276115]: Creation of publisher failed: unknown error handler name 'rosmsg'

解决方法：

终端中输入

sudo apt-get install ros-kinetic-genpy

【注意】上面命令中kinetic需要修改为你的ros版本号

安装完成后，再次运行时就正确了