Whenever a student does not end their session by clicking the button 'Finish Exam' the session is not properly closed. The message "Student hasn't finished their exam yet" will appear even though the student is no longer taking their exam.
There is automation in place that detects these sessions and closes them: after 5 minutes of the exam end time if the exam had a duration or after 3 hours if the exam had no duration.
However this does not close 100% of the sessions affected, due to this, some sessions need to be closed manually.
When the session remains open, the reviewing is not triggered and the session is not reviewed and remains under the status “-”.
You can now follow the instructions on this article: Setting a start or end time to a session, to know how to close these sessions.