Hi all ! I am following this tutorial:https: //www.youtube.com/watch?v=JXnXnAXrYj8&t=4s I have jetson nano with connected rplidar A1

when I run ros2 launch slam_toolbox online_async_launch.py the only thing that is written on the console is the following:

[INFO] [launch]: All log files can be found below /home/netland/.ros/log/2023-02-14-11-54-48-711252-ubuntu-9693 [INFO] [launch]: Default logging verbosity is set to INFO [INFO] [slam_toolbox-1]: process started with pid [9707]

then, in another terminal I run Rviz2 and rqt_graph. On the graph I can see topics /scan, /map and /tf. this is what I get when I run ros2 topic list:

/clicked_point

/goal_pose

/graph_visualization

/initialpose

/map

/map_metadata

/parameter_events

/rosout

/scan

/tf

/tf_static

in rviz2 I have 2 fixed frames available: map and odom. When I add a map from /map topic nothing happens (no matter which fixed frame I am on). when I expand the map status, it is telling me that there is no map received. Then I decided to echo the topics /scan and /map - there is nothing. I tried to publish on the /scan topic using this repo: https://github.com/CreedyNZ/rplidar_ros2.git. when I do that and listen to the /scan topic there is information comming from the lidar, but again nothing happens in rviz. The lidar is working when I run the example from the repo alone, but I am not able to do mapping.

It would be of great help if you can also provide me with sources for learning, as most of the tutorials I saw doesn't dive into how the mapping works and which topic should go where.

Thank you !