Exercise 2.3 ROS2 Navigation

help me
I’m having difficulty completing exercise 2.3, from ROS2 navigation
I did everything I was told and it didn’t work

and I don’t understand the rviz load, how am I going to load it?

Hi Daniel,

What do you mean by it didn’t work?

If you could provide more details on what you have done and what is not working (any errors?), we would be in a better position to help.