Solution:

a2enmod rewrite
service apache2 restart

Hi there! First I want to thank your for the nice set of tools you developed. They make much sense to me, so I decided to use bloggggg as my platform. I just installed it on a raspberry pi, as a part of a self hosting blog experiment. The problem is when I try to login, or access articles as a standalone page (by clicking the arcticle title/link) or the tags links (which should lead me all the posts with that tagged), they just send me to 404 page not found.
I see the browser is looking for content in a "tag" folder, or the arcticle folder (or something dynamically generated by PHP, not sure is that how it works), which I was expecting it would be created automatically. Maybe there are some missing PHP modules? Maybe there's just something I am not getting right. I granted all permissions to the server, and tried with Nginx and Apache, but none of them worked. Just to be clear, I'm not a developer, just a fairly exploring user. Hope there's some fix, I'd love to use it, and it's just about what I need for a blog. Anything else would be too much. Anyway, thank you for your work.