DDS: QoS: Quality of Service: botbox RViz file does not exist!

I moded on the lesson, in 2.2 QoS: Quality of Service
rviz2 -d /home/user/ros2_ws/src/box_bot/box_bot_description/rviz/3_box_bot.rviz

I find this error:

How can I solve?

Hi I solve with
to start gazebo with
user:/home/simulations$ cd ros2_sims_ws/
user:/home/simulations/ros2_sims_ws$ source install/setup.bash
user:/home/simulations/ros2_sims_ws$ ros2 launch box_bot_gazebo main.launch.xml

and to start rviz2 options file:
user:/home/simulations/ros2_sims_ws/src/box_bot/box_bot_description/rviz$ rviz2 -d box_bot.rviz

Unfortunately, I do not see the topics with:
user:/home/simulations/ros2_sims_ws$ ros2 topic list


Regarding the location of the rviz file, let me capture this bug for review by the team.

Were you able to see the topics when you sourced as indicated in the notebook?

Response from @saxosun through e-mail:

Not completely. I saw the box bot robot in Gazebo, I saw it in RViz with lasers and deep camera, but I do not see any topics using ros2 topic list

Also it seems to me that DDS course in not suitable for the remote users, am I right? thanks

Hi @saxosun,

I see you are facing some problems in the DDS course.

This course is indeed not ready to be followed online. It was created for an In-Person Intensive Training in Barcelona, where at least 20 Raspberry PI were configured for the training, but are not running right now (after the in-person training has finished).

Let’s see what @rtellez says, but I suppose one of the two things will happen:

  1. The course will be disabled because it is not ready to be followed online
  2. The course will be modified to be easily followed online.

I see that the second is better for you and many other members of The Construct.

Ricardo will come up with a solution for this next week, after discussing it with @roalgoal.

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