When launching husky viz, the laser readings are not visable.

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Hi there. I am a beginner at ROS and I started following the tutorials to simulate the Husky robot.

My goal is to perform 2D navigation using the Husky and LIDAR. I started by launching the gazebo environment (roslaunch husky_gazebo husky_playpen.launch), and followed it with launching the husky viz (roslaunch husky_viz view_robot.launch). And by doing so, the laser readings are not shown in viz, the obstacles, the wall and any wall that the laser should pick up, but rather an empty scene with only the husky shown.

I am not sure where the problem is, but because of this, I can't start producing the map of the environment.