404 error on feeder setup page

[toneck]

We received our recently purchased lumenPnP and finished setting it up.
One of my colleagues wanted to try "Running your first job" and when it came to the feeders, he encountered a missing page.

Going on this page https://docs.opulo.io/openpnp/v4/ftp/2-feeder-setup/ and clicking on the "setting them up" link text

It goes to this page: https://docs.opulo.io/openpnp/feeders/1-overview/feeder-overview.md
But the page is mostly blank showing a 404:

[skipfire]

I'm guessing the right page is https://docs.opulo.io/feeders/1-overview/feeder-overview/