[move_base_demo.launch] is neither a launch file in package [husky_navigation] nor is [husky_navigation] a launch file name

Hi, I am currently in Map Creation-Noetic but I am receiving this error although I followed exactly as the instruction says

Hello @WhenOwlsHoot ,

The Map Creation Unit is based on the Turtlebot robot, not on the Husky robot. If you are seeing that instruction it might be because the wrong notebook loaded. Try to change to a different Unit and then come back to this one. Make sure that the notebook loaded is the one for the Map Creation Unit.

Thank you. Now, it has loaded the right one!