Controller Spawner couldn't find the expected controller_manager


I’m doing the micro project. I want to start from the pi_robot_v2.urdf, I have created the launch files for the controllers, spawn the Gazebo model, but it shows the following error:

[WARN] [1637960432.007185, 0.000000]: Controller Spawner couldn’t find the expected controller_manager ROS interface.

In addition, it does not show the Gazebo model.

Please could you help me?

Hi, this could be for some error in the launch file. Could you share here the code or at least the commands to reproduce your issue?

Any solution of this problem mentioned above? sharing my launch file

Also i am having the problem that if model spawn in gazebo environment , how i will move its joints???