An nginx server is responding to HTTP requests to your domain. Is that -w path the root folder in the nginx server block? Because you mention an AdonisJS server too but that does not look like the one responding to HTTP (see below)
curl -I6 http://sosedi.appsofter.ru/.well-known/acme-challenge/Test404
HTTP/1.1 301 Moved Permanently
Server: nginx/1.24.0
Location: https://sosedi.appsofter.ru/.well-known/acme-challenge/Test404
curl -I6 https://sosedi.appsofter.ru/.well-known/acme-challenge/Test404
HTTP/2 404
server: nginx/1.24.0
curl -I4 http://sosedi.appsofter.ru
curl: (7) Failed to connect to sosedi.appsofter.ru port 80 after 109 ms:
Connection refused
Also, any request to your IPv4 address fails to connect. That will not prevent you from getting a Let's Encrypt cert but it will cause problems for people trying to use IPv4. Check the DNS A record IP address.