Ros navigation in 5 days

i keep getting that error from rviz and the map node seems to be not receiving data
exercise 2.18


Hi @80601 ,

What is the output / behavior of the Rviz2? Are you able to map the environment using the robot?
Could you share some screenshots of your RViz2.

I think you can ignore the warnings, even I saw some of them when I did the course.