Exercise 2.1b no LaserScan

When running exercise 2.1b, when running rviz2 (after the source command) nothing shows up in the window relating to LaserScan. I can’t find an option to add a panel for LaserScan either. All I have is Global Options, Global Status, and Grid.

Edit: Nevermind, figured it out. I was getting panels mixed up with the visualization items you can add. Turns out I should really go through a ROS course before the ROS navigation course.

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