@yk
Hello!
I use a free subscription. This subscription apparently has a problem with https protocol. Found out by randomly studying the weather server’s response in the browser.

@ally
Hi!
There was an error “** ERROR ** Error: socket hang up”
This solution helped:
in the module node_helper.js

var url = "https://api.openweathermap.org/data/2.5/onecall" +

replace with

var url = "http://api.openweathermap.org/data/2.5/onecall" +

(https -> http)
and restart the MM2