ERROR: cannot launch node of type [robot_state_publisher/state_publisher]: robot_state_publisher問題解決

運行命令 $ roslaunch mbot_description display_mbot_base_urdf.launch出現以下錯誤 解決辦法 $ sudo apt-get install ros-melodic-robot-state-publisher 之後重新運行會出現rviz節點報錯： ERROR: cannot launch node of type [rviz/rviz]: rv

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