Error, turtlebot_as is not a package

In the ros2in5days python course, understanding actions, the course tells me to enter these commands image

Yet I get the error: Package ‘turtlebot3_as’ not found: “package ‘turtlebot3_as’ not found, searching: [’/opt/ros/foxy’]”

There is no package here named turtlebot3_as, and the command is given no explanation. Why are there so many errors in the course material? How do I fix this?

Hi, thank you for bringing this to our attention and sorry you experienced that error. We updated the notebook, with the correct source, please check it now and let me know if it works.

source ~/.bashrc_ros2

What other errors do you refer to?