“Goto Post” 404 error

On the front-end mDocs view, where you click on the title of an mDoc document, and there are options like “download, description, preview…”

These all work other than “Goto Post.” It’s looking for a page like:

https://mysite.com/mdocs-posts/christmasparade_2017/

I think the problem is that there is no /mdocs-posts directory – at least when I look in FTP. This happens both with files I did a batch FTP upload with and those I uploaded individually through the mDocs interface.

Sorry I can’t share a link, the site is not publicly accessible now (that’s why there is no SSL).

I tried disabling all other plugins.