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This question pops up quite regularly and the solution is usually the same, source the setup.bash file:

source ~/catkin_ws/devel/setup.bash

You can always Google the error to find a solution before posting a question:

https://www.google.com/search?q=OUTPUT%3A+ERROR%3A+cannot+launch+node+of+type

This question pops up quite regularly and the solution is usually the same, source the setup.bash file:

source ~/catkin_ws/devel/setup.bash

Where catkin_ws is your catkin workspace. You can always Google the error to find a solution before posting a question:

https://www.google.com/search?q=OUTPUT%3A+ERROR%3A+cannot+launch+node+of+type

This question pops up quite regularly and the solution is usually the same, source the setup.bash file:

source ~/catkin_ws/devel/setup.bash

Where catkin_ws is your catkin workspace. You can always Google the error to find a solution before posting a question:

https://www.google.com/search?q=OUTPUT%3A+ERROR%3A+cannot+launch+node+of+typehttps://www.google.com/search?q=OUTPUT%3A+ERROR%3A+cannot+launch+node+of+type+site%3Aanswers.ros.org