Is it possible to add two laser for navigation2

edit

I'm using ros2 foxy in ubuntu 20.04 and try to show two laser scan topic in Rviz.

I open gazebo simulation for publish two topic /scan_1 and /scan_2.

Then modify nav2_params.yaml as below:

  local_costmap:
    local_costmap:
      ros__parameters:
        ...
        voxel_layer:
          ...
          observation_sources: scan_1 scan_2
            scan_1:
              topic: /scan_1 
              max_obstacle_height: 2.0
              clearing: True
              marking: True
              data_type: "LaserScan"
            scan_2:
              topic: /scan_2 
              max_obstacle_height: 2.0
              clearing: True
              marking: True
              data_type: "LaserScan"
  global_costmap:
    global_costmap:
      ros__parameters:
        ...
        voxel_layer:
          ...
          observation_sources: scan_1 scan_2
            scan_1:
              topic: /scan_1 
              max_obstacle_height: 2.0
              clearing: True
              marking: True
              data_type: "LaserScan"
            scan_2:
              topic: /scan_2 
              max_obstacle_height: 2.0
              clearing: True
              marking: True
              data_type: "LaserScan"

but it seems not show the local_costmap and global_costmap in Rviz.

my Rviz try to subscribe the topic /scan_1 or /scan_2, still not work.

if any other idea. Thanks for help.

Here my log file: https://drive.google.com/drive/folder...