Unable to add member using a valid name

[nus-pe-script]

Describe the bug Used the name of a real life person (Callum Hudson-Odoi) but system does not allow me to add a member using this name.

To Reproduce Steps to reproduce the behavior:

1. Enter "addmember n/Callum Hudson-Odoi p/12345678 e/callum@example.com a/311, Chelsea Ave 2, #02-25 c/609653 m/Footballer t/friends t/owesMoney"
2. Press ENTER key

Expected behavior Person should be added to the ClubHub.

Screenshots

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