404 when opening my private workspace


When I try to open my private workspace, I am getting the following 404 message:

404 - ide Project “cman81/practice-is-over” does not exist.

However, I am sure I did not delete it as I was working on it 3 days ago.

Is this a bug? If not, why did this workspace get deleted? The URL is:

Posting here in case other people run into the same problem.