The proctor can run into an error while adding a user to the test list as
seen in
Figure 2.4.1.2.3.
A student can run into an error while logging in as seen in
Figure 2.4.2.1.2.
An Instructor can run into two errors while generating test. The fist is if the time constraint is not met as seen in
Figure 2.3.5.2.
The second happens if there are not enough questions in the database as seen in
Figure 2.3.5.8.