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这个并不是错误，只是一个警告。因为软件包的名字包含了大写字母，但是按照ROS的规范必须使用小写字母。但是并不会影响正常运行。
@weijiz 可是我电脑出现了无法连接设备的问题 No devices connected… waiting for devices to be connected
@weijiz 然后我试着去运行教程九，也是连接不到设备的问题，是不是摄像头出现了问题
@weijiz 已解决，谢谢
