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I have been following this tutorial and he is able to load his saved map back into RViz with no issues but when I do the exact same thing I just get an empty map? Not really sure what I am doing wrong and I haven't been able to find an answer for a similar problem from my research.

After launching gazebo, RViz2 and my teleopkeyboard script I also run Slam_toolbox with the following command:

ros2 launch slam_toolbox online_async_launch.py file_params:=./src/ford_bot/config/mapper_params_online_async.yaml use_sim_time:=true

Link to my yaml file

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