Error HTTP request post

Good morning

I have a problem with a POST request. during the request, I got an error:
"RequestError: connect ECONNREFUSED 127.0.0.1:443".
but when I take this same request on another raspberry with the same hardware configuration (modem, rasp network) it works

I deduce that this does not come from the request but from my node red.

do you have a lead?

Where is the device running the http request ? Where is node red running?
Have you enabled https in the node red server?

Edit: are you sending the request to node red or from it?

node red is on the raspberry
when I open the url from the raspberry browser it works.
it is a node HTTP request from node red which makes the request.

for the HTTPS function I don't know where should I look

node red is on the raspberry
when I open the url from the raspberry browser it works.
it is a node HTTP request from node red which makes the request.

for the HTTPS function I don't know where should I look.

Exactly what url works in the browser?

Also show us how you have configured the http node.