Serialize problem between R and Nodejs processes

[chasset]

Dear zeromq team,

Describe the bug
I try to send request/reply messages between a nodejs client and a R server,
and I got a serialize problem.

Reproducing
I wrote a gist giving docker compose example : https://gist.github.com/chasset/e297d2c5e6c6dbf4802670d75ee2904d
In replier.R, I gave the option "unserialize = F" to the send function in order to get a result. Otherwise, it raises an error.
Finally, the message "Message received!" sent from server is translated in "X" in client.

Expected behavior
The message should be "Message received!" in client too.

Tested on

• OS: Ubuntu 22.04
• ZeroMQ.js version: 6.0.0-beta.17