ROS执行rosrun rqt_graph报错No module named 'catkin_pkg'
环境:Ubuntu16.04+ROSROSkinetic,在这里我执行命令:rosrunrqt_graphrqt_graph时候报错,信息如下:raceback(mostrecentcalllast):File"/opt/ros/kinetic/lib/rqt_graph/rqt_graph",line5,infromrqt_gui.mainimportMainFile"/opt/ros/kine