Cant create a LE Cert

[ktownmods]

My domain is: blog.samfreaks.de
A Record is set
I have Pagespeed module for nginx
I can create on 30.10.18 a cert for my root domain samfreaks.de but now i dont know why i cant

I ran this command: /usr/bin/letsencrypt certonly -n --text --agree-tos --expand --authenticator webroot --server https://acme-v02.api.letsencrypt.org/directory --rsa-key-size 4096 --email postmaster@blog.samfreaks.de --domains blog.samfreaks.de --domains www.blog.samfreaks.de --webroot-path /usr/local/ispconfig/interface/acme

It produced this output:Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for blog.samfreaks.de
http-01 challenge for www.blog.samfreaks.de
Using the webroot path /usr/local/ispconfig/interface/acme for all unmatched domains.
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. www.blog.samfreaks.de (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://www.blog.samfreaks.de/.well-known/acme-challenge/Z9ALHmV6ctfYi2qS-yuFc7gIQd2yc6ipMiWIhCY2nsQ: “\r\n404 Not Found\r\n\r\n

404 Not Found

\r\n

---

nginx/1.15.4</ce”, blog.samfreaks.de (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://blog.samfreaks.de/.well-known/acme-challenge/9bU9TXTZuSYA1ko1UE32HyMz4sG6qEEvqw5HJMuXzus: “\r\n404 Not Found\r\n\r\n

404 Not Found

\r\n

---

nginx/1.15.4</ce”

IMPORTANT NOTES:

• The following errors were reported by the server:

  Domain: www.blog.samfreaks.de
  Type: unauthorized
  Detail: Invalid response from
  http://www.blog.samfreaks.de/.well-known/acme-challenge/Z9ALHmV6ctfYi2qS-yuFc7gIQd2yc6ipMiWIhCY2nsQ:
  “\r\n404 Not
  Found\r\n\r\n

  404 Not
  Found

  \r\n

  ---

  nginx/1.15.4</ce”

  Domain: blog.samfreaks.de
  Type: unauthorized
  Detail: Invalid response from
  http://blog.samfreaks.de/.well-known/acme-challenge/9bU9TXTZuSYA1ko1UE32HyMz4sG6qEEvqw5HJMuXzus:
  “\r\n404 Not
  Found\r\n\r\n

  404 Not
  Found

  \r\n

  ---

  nginx/1.15.4</ce”

  To fix these errors, please make sure that your domain name was
  entered correctly and the DNS A/AAAA record(s) for that domain
  contain(s) the right IP address.

My web server is (include version): Nginx 1.15.4

The operating system my web server runs on is (include version): Ubuntu 18.04

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know):yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):Ispconfig

[ktownmods]

Let´s Encrypt Log

[rg305]

The name resolves to an IPv4 and an IPv6 address.
Both appear to be working correctly.
There is an http tp https redirection in place.
And it also seems to be working correctly.
However, LE can’t reach the challenge file…
Please place a test.txt file at:
http://blog.samfreaks.de/.well-known/test.txt

[mnordhoff]

What does Nginx’s error.log show?

[JuergenAuer]

Looks like the problem is fixed.

[ktownmods]

yes it was fixed

i dont activate ipv6 on my controlpanel but in my dns is a aaaa record xD