Error Handling message can be improved for event

[termehlee]

In the case where the event's time has been set incorrectly, the error message thrown should be more specific, instead of a general one.

[nus-pe-bot]

Team's Response

Items for the Tester to Verify

:question: Issue response

Team chose [response.CannotReproduce]

• [ ] I disagree

Reason for disagreement: [replace this with your reason]

---