Hi!
I’ve seen many people commenting in other courses that the videos are failing. It’s happening for the Terraform basic course too.
None of them exist. I was motivated to start studying today, but it seems I won’t be able 
Apologies for the inconvenience!
The videos are rendered by Vimeo and this is a transient Vimeo error. The Vimeo team will resolve it shortly, and all the videos should be back.