How to fix punycode Error?

[acmicpc0614]

I faced this err. I tried to fix this err but not.
How can I fix this err?

(node:19104) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)

[RedYetiDev]

That's not an error. It's a deprecation warning. The punycode module has been deprecated.