Problem in Unit2: Kalman Filters

The problem is with the first task.
"Inside the code editor window, open the bayes_filter folder located inside catkin_ws/src.
Open /scripts and then the file.
Add a python list called belief as indicated by the comment ### Add initial belief HERE ###

But the catkin_ws/src folder is empty. There is no bayes_filter folder. What should I do with this?
I bought the subscription but can do nothing with this course.

It’s my understanding that you have to clone the course code repository in the introduction chapter. You might have missed that initial step.

Hello @putienkosanerok,

Yes, as @enieves3 says, you need to download the repository course files, as it is indicated in the 1st chapter.