Update 17.40: Problem with one of the front-end servers resolved.
TUNI Moodle occasionally displayed “Service Unavailable” errors. Problems started around 14:34.
You can work around the issue by logging into Moodle using a different web browser or by using the browser’s private/incognito mode.
Avoid starting quizzes or other long-duration activities. If you are making edits, save your work frequently or copy the text you are editing from time to time, for example, into Notepad.
The issue has been reported to the service provider, but there is no estimated time for a fix yet.
We apologize for any inconvenience caused by this Moodle problem.