2048 bit DH parameters present
SUBDOMAINS entered, processing
SUBDOMAINS entered, processing
Sub-domains processed are:  -d nextcloud.herbst.world
E-mail address entered: surfer2010@herfort.eu
http validation is selected
Generating new certificate
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for herbst.world
http-01 challenge for nextcloud.herbst.world
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. herbst.world (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: The key authorization file from the server did not match this challenge [J2nYU0ZXlK_wkK_MbfBC2zhHGdEFKaVoopVs2UCT_o0.7s8kgShkzqyDSoNokvD48K5Kl6VKNn65l-lgHX4n3ks] != [ACME client standalone challenge solver]
IMPORTANT NOTES:
 - The following errors were reported by the server:

   Domain: herbst.world
   Type:   unauthorized
   Detail: The key authorization file from the server did not match
   this challenge
   [J2nYU0ZXlK_wkK_MbfBC2zhHGdEFKaVoopVs2UCT_o0.7s8kgShkzqyDSoNokvD48K5Kl6VKNn65l-lgHX4n3ks]
   != [ACME client standalone challenge solver]

   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.
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