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Can anyone tell me how to use FollowJointTrajectoryAction? Where is the ros node implementing FollowJointTrajectoryAction server sits?
And why move_arm always look for FollowJointTrajectoryAction message type even if I put the controller action name in the variable "controller_action_name (string, default: /r_arm_controller/joint_trajectory_action/)" as "arm_controller/joint_trajectory_action"??