Exercise command does not fail gracefully

[azriellee]

[nus-se-bot]

Team's Response

No details provided by team.

The 'Original' Bug

[The team marked this bug as a duplicate of the following bug]

Program does not fail gracefully for filter

A check an corresponding error message for incorrect filter commands will be good and appropriate here

---

_{[original: nus-cs2113-AY2223S2/pe-interim#2722] [original labels: type.FunctionalityBug severity.Low]}

Their Response to the 'Original' Bug

[This is the team's response to the above 'original' bug]

Minor aesthetic issue

Items for the Tester to Verify

:question: Issue duplicate status

Team chose to mark this issue as a duplicate of another issue (as explained in the Team's response above)

• [x] I disagree

Reason for disagreement: This is not a duplicate, it must be fixed independently.

---

## :question: Issue severity Team chose [`severity.VeryLow`] Originally [`severity.Low`] - [x] I disagree **Reason for disagreement:** Definitely not just a cosmetics issue. It will affect the experience users have with the software, especially if they see system error messages when using the command. Thus giving it a severity of low is already generous.

---