Chapter 2: User-Facing Backend Ticket: User Management

User Management: duplicate emails should not be allowed .
Getting above error. if anyone can help on this.

You must modify your code to make sure that it is not possible.

Some comments in the code should tell if you must return a boolean, a error value or throwing an exception.

Indicate which version of the course. Java, Python, JavaScript or .net.

Thanks , now it is solved.