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i have issue in installing bigbluebutton on ubuntu local machine 18.04

gb flag
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 bbb.danishkada.com
Using the webroot path /var/www/bigbluebutton-default for all unmatched domains.
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. bbb.danishkada.com (http-01): urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up A for bbb.danishkada.com - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for bbb.danishkada.com - check that a DNS record exists for this domain

IMPORTANT NOTES:

The following errors were reported by the server:

Domain: bbb.danishkada.com
Type: None
Detail: DNS problem: NXDOMAIN looking up A for bbb.danishkada.com -
check that a DNS record exists for this domain; DNS problem:
NXDOMAIN looking up AAAA for bbb.danishkada.com - check that a DNS
record exists for this domain

Your account credentials have been saved in your Certbot
configuration directory at /etc/letsencrypt. You should make a
secure backup of this folder now. This configuration directory will
also contain certificates and private keys obtained by Certbot so
making regular backups of this folder is ideal.
bbb-install: Let's Encrypt SSL request for bbb.danishkada.com did not succeed - exiting
root@dk-Precision-WorkStation-T3500:~#
Soren A avatar
mx flag
So what is the question ? Have you verified the errors above ? Exactly what commands are you running and what guide are you following ?
mangohost

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