Nexcloud Setup Lets Encrypt stack file problem

---
version: "2"  
services:
  nextcloud:
    image: linuxserver/nextcloud
    container_name: nextcloud
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/Berlin
    volumes:
      - /media/NVMe_1TB/appdata/nextcloud/config:/config
      - /media/NVMe_1TB/appdata/nextcloud/data:/data
    depends_on:
      - mariadb
    restart: unless-stopped
  mariadb:
    image: linuxserver/mariadb
    container_name: mariadb
    environment:
      - PUID=1000
      - PGID=1000
      - MYSQL_ROOT_PASSWORD=nc29979
      - TZ=Europe/Berlin
    volumes:
      - /media/NVMe_1TB/appdata/mariadb:/config
    restart: unless-stopped
  letsencrypt:
    image: linuxserver/letsencrypt
    container_name: letsencrypt
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/Berlin
      - URL=neno.ddns.net
      - SUBDOMAINS=wildcard
      - VALIDATION=noip
    volumes:
      - /media/NVMe_1TB/appdata/letsencrypt:/config
    ports:
      - 443:443
      - 82:80
    restart: unless-stopped

[cont-init.d] 30-keygen: executing... 
using keys found in /config/keys
[cont-init.d] 30-keygen: exited 0.
[cont-init.d] 50-config: executing... 
Variables set:


0


0
TZ=Europe/Berlin
URL=neno.ddns.net
SUBDOMAINS=wildcard
EXTRA_DOMAINS=
ONLY_SUBDOMAINS=false
VALIDATION=noip
DNSPLUGIN=
EMAIL=
STAGING=

SUBDOMAINS entered, processing
Wildcard cert for myname.ddns.net will be requested
No e-mail address entered or address invalid
http validation is selected
Generating new certificate
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Requesting a certificate for *.myname.ddns.net and neno.ddns.net
Performing the following challenges:
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.
ERROR: Cert does not exist! Please see the validation error above. The issue may be due to incorrect dns or port forwarding settings. Please fix your settings and recreate the container
[cont-finish.d] executing container finish scripts...
[cont-finish.d] done.
[s6-finish] waiting for services.
[s6-finish] sending all processes the TERM signal.
[s6-finish] sending all processes the KILL signal and exiting.
[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 01-envfile: executing... 
[cont-init.d] 01-envfile: exited 0.
[cont-init.d] 10-adduser: executing... 
usermod: no changes

-------------------------------------
          _         ()
         | |  ___   _    __
         | | / __| | |  /  \ 
         | | \__ \ | | | () |
         |_| |___/ |_|  \__/


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-------------------------------------
GID/UID
-------------------------------------

User uid:    1000
User gid:    1000
-------------------------------------

[cont-init.d] 10-adduser: exited 0.
[cont-init.d] 20-config: executing... 
[cont-init.d] 20-config: exited 0.
[cont-init.d] 30-keygen: executing... 
using keys found in /config/keys
[cont-init.d] 30-keygen: exited 0.
[cont-init.d] 50-config: executing... 
Variables set:


0


0
TZ=Europe/Berlin
URL=neno.ddns.net
SUBDOMAINS=wildcard
EXTRA_DOMAINS=
ONLY_SUBDOMAINS=false
VALIDATION=noip
DNSPLUGIN=
EMAIL=
STAGING=

SUBDOMAINS entered, processing
Wildcard cert for neno.ddns.net will be requested
No e-mail address entered or address invalid
http validation is selected
Generating new certificate
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Requesting a certificate for *.neno.ddns.net and neno.ddns.net
Performing the following challenges:
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.
ERROR: Cert does not exist! Please see the validation error above. The issue may be due to incorrect dns or port forwarding settings. Please fix your settings and recreate the container