There is a Chemistry 211 course I having been taking all semester, and for some reason, during the final week of the end of the year, I can't access it. The course no longer appears on my Dashboard, while all of my other courses still do. After trying to access the course through my brower history, I was greeted with this message: 

Access Denied > You don't have access to view this resource. It also showed a picture of a green padlock on it. 

I want to know why this is happening.