Run

On Dell remote

terminal 1

 roscore

On TB3 client

terminal 1

 roslaunch turtlebot3_bringup turtlebot3_core.launch

terminal 2

 roslaunch turtlebot3_bringup turtlebot3_lidar.launch

On Dell remote

terminal 2

 roslaunch teleop_twist_joy teleop.launch

terminal 3

 export TURTLEBOT3_MODEL=waffle
 roslaunch turtlebot3_slam turtlebot3_slam.launch

terminal 4

 rosrun rviz rviz -d `rospack find turtlebot3_slam`/rviz/turtlebot3_slam.rviz

terminal 5

 rosrun map_server map_saver -f ~/map

Error

* gmapping skipping xml