Hi to everyone, I am having a trouble by doing the Gazebo-Ros tutorial. I arrived to the tutorial of the plugin and after I lunched the commands:

roslaunch rrbot_gazebo rrbot_world.launch
roslaunch rrbot_description rrbot_rviz.launch

I don't see the stream of the camera in RVIZ. By using the command:

rostopic list

I don't find the topic of the camera.

Can you help me?

Thanks a lot