How can I visulaize a pre built map on ROS2-Dashing

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OS: Ubuntu 18.04 ROS2 Dashing

I have installed Nav2 repository following https://navigation.ros.org/build_instructions/index.html#build Terminal 1: ros2 run rviz2 rviz2 and then added map from the rviz visualization Terminal 2: ros2 run nav2_util lifecycle_bringup map_server Terminal 3:ros2 run nav2_map_server map_server --ros-args --params-file /home/volocopter/Documents/nav_map/maps/test_map.yaml

ros2 topic list /clicked_point/map_server /rviz /transform_listener_impl /initialpose /map_server/transition_event /move_base_simple/goal /parameter_events /rosout /tf /tf_static

ros2 node list /map_server /rviz /transform_listener_impl

Expected Behavior : Visualize map on RVIY Actual - nothing is displayed