Unable to access hands-on tutorials in Illustrator

Hi. I was going through the hands-on tutorials last week, and when I opened Illustrator, intending to continue, I was unable to access them. They are visible on the home screen (see first screenshot), but when I click on one, it opens a blank canvas and the window where the tutorial information should be instead says "Couldn't load content" (second screenshot). If I try to access the hands-on tutorials through the Discover Panel, the option for "hands-on tutorials" is listed under Browse, but clicking on it leads to a blank screen/empty list (third screenshot.)

I am connected to the internet, I've tried closing and relaunching Illustrator, and the tutorials on the website don't include the hands-on tutorials. Can someone please help me get back to those tutorials?