Sebastiano Fregnan

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I have the same issue! Have you managed to solve this meanwhile @yang-yuke? Edit: I have found this related issue [https://github.com/ros2/launch_ros/issues/214](https://github.com/ros2/launch_ros/issues/214).

I have managed to solve this using `parameters=[{'robot_description': Command(['xacro ', LaunchConfiguration('model')])}]` and removing the unnecessary import, but now issue #55 emerged.