It is an issue with the setup of the images used in this lab. I’ve raised an internal ticket, however you can get it to work by running the following commands on each of controlplane and worker node prior to performing the commands you know from the course.
Is this google repo searchable via official documentation?! I am unable to find it.
If its no searchable t then it puts up questions if this lab is applicable for helping exam preparation.
EDIT:
In german version of documentation there exists full repo path to be used.