I just finished working on my course and have published it, but when a student tries to access it, it's showing no content and a message that "the course is not built yet".
This is likely because some / all of your content is set to draft still! You'll notice that your content is in draft mode if a small pencil icon shows up beside the chapter / lesson title:
In order to fix this, just go into the lessons that are still set to draft and make sure that the "Set to draft" option is unchecked and save your changes!
That's what I was doing wrong. Thanks!