Bug Report for https://neetcode.io/problems/duplicate-integer

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

I tried to solve the problems, but even when I already wrote the right solution, it will show this error message: undefined: hasDuplicate. After a while I figured it out, it's because you name the function containsDuplicate instead of hasDuplicate. When I changed the function name, everything worked well.

Before:

After: