How to properly upload the sitemap.xml file to a node.js project?

Question

Node.js

Good afternoon, I uploaded the sitemap.xml file to the root folder of the project on node.js.
Google webmaster gives an error that this file is not processed, I don’t understand why
the project is located in /var/www/proekt/
Google suggests entering the url to the sitemap
https://domen / I entered the URL of the Sitemap file
and just sitemap.xml and /var/www/proekt/sitemap.xml - nothing helped
The second input option I used because pm2 refers to the home directory of /home/user files and in js files I have when render, the full path to the file is always indicated.
But Google did not accept either such an option or such, how to be help please?

Answer 1

nodejs middleware. There you specify where to give statics. Spm node runs on a port and only processes what it listens on