The following lines exist in move_base_laser.launch in turtlebot_navigation/laser/move_base_laser.launch file.
<rosparam file="$(find turtlebot_navigation)/config/global_costmap_params.yaml" command="load" />
however, there is no config folder.
Instead these lines should be:
<rosparam file="$(find turtlebot_navigation)/param/global_costmap_params.yaml" command="load" />
pointing towards local and global costmap param.yaml files in turtlebot_navigation/param folder.
The following lines exist in move_base_laser.launch in turtlebot_navigation/laser/move_base_laser.launch file.
however, there is no config folder.
Instead these lines should be:
pointing towards local and global costmap param.yaml files in turtlebot_navigation/param folder.