ahoy @WedlineJ,
your question is too abstract to actually answer it ;))
could you possibly disclose what course in particular couldn't be loaded? Share here the name and URL of the course, otherwise it's impossible to help you.
General advice about anything not loading correctly would be to log out, clear cache/history and log in again, or retry in a different browser.
✂-----Cutting-out-the---✦AI-noise✦---All-replies-written-and-vouched-for-by-GlideFather---
