Failed test case: Missing correct printed message.
Expected:
One copy of Brave New World checked out. There are now 3 copies available.,
but got:
an incorrect message
According to the screenshot you have shared regarding the message you are getting, please double check if your implemented code prints the expected message.
(Solution code removed, as posting it publicly is against the honour code of this community, regardless if it is correct or not. You can share the errors you get)