Strange log line

Few days ago I found this line in my syslog:

Sun, 04 Sep 2022 12:37:45 GMT express deprecated res.status("200"): use res.status(200) instead at ../../usr/lib/node_modules/node-red/node_modules/@node-red/nodes/core/network/21-httpin.js:328:34

What is it referring to?

Hi @fmarzocca - what version of Node-RED are you using?

Does your flow set msg.statusCode before passing it to the HTTP Response node? If so, how are you doing that?

The error is because msg.statusCode has been provided as a String ("200") rather than a number (200).

It is a deprecation warning - meaning it will still work, but the flow should be updated to ensure it is passing in a number not a string.

I will check, but it is hard to find the right node... (v. 3.0.2)

I have checked. I am not setting msg.statusCode anywhere, except here:

But the log line is not repeating anymore. Maybe it was a test I made days ago. I will check again in the coming days,. Thank you for your answer.