503 Error on accessing book links

[ryanmarion]

Just wanted to bring to your attention that the links to access the book are broken

[Ducasse]

Thanks Ryan.
Can you tell me where you see these links?
Now the most recent version is Pharo by Example 9.

[ryanmarion]

Wow, a reply from the prof himself :) I am unable to access the links provided in the README of this repo (screenshot below). I was, however able to get the book from the main site where the books are featured

[Ducasse]

Thanks!