Invalid PDF (TFIDF slides link)

[reetagithub]

On page https://github.com/NatLibFi/Annif-tutorial/blob/master/exercises/README.md section 2 TFIDF: Link "Slides" does not work, it gives an error message 'Error rendering embedded code Invalid PDF'

Edit: The same happens with 'Slides' link on subchapter 'Algorithms' and Chapter 3 Web UI as well, probably also on other chapters.

[juhoinkinen]

@monalehtinen found this discussion about the problem. Seems like we can do nothing for this, except to instruct to try the mentioned tricks and/or link to the discussion.

[osma]

I haven't seen this in a while, and it's a github problem, nothing more we can do about it. Closing.