Acme Certificate Fails To Renew

Help!
1

I have been unable to renew my acme letsencrypt certificates!

I am currently trying to renew the certificate for my four subdomains: organizr.mydomain.com, ombi.mydomain.com, tautulli.mydomain.com, & nextcloud.mydomain.com.

Post image

This is the error message that I receive when I “Issue/Renew” :

ACME-MYDOMAIN-COM-PROD
Renewing certificate 
account: ACME-MYDOMAIN-COM-PROD 
server: letsencrypt-production-2 


/usr/local/pkg/acme/acme.sh --issue -d 'organizr.mydomain.com' --standalone --listen-v4 --httpport '4001' -d 'nextcloud.mydomain.com' --standalone --listen-v4 --httpport '4001' -d 'tautulli.mydomain.com' --standalone --listen-v4 --httpport '4001' -d 'ombi.mydomain.com' --standalone --listen-v4 --httpport '4001' --home '/tmp/acme/ACME-MYDOMAIN-COM-PROD/' --accountconf '/tmp/acme/ACME-MYDOMAIN-COM-PROD/accountconf.conf' --force --reloadCmd '/tmp/acme/ACME-MYDOMAIN-COM-PROD/reloadcmd.sh' --log-level 3 --log '/tmp/acme/ACME-MYDOMAIN-COM-PROD/acme_issuecert.log'

Array
(
[path] => /etc:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin/
[PATH] => /etc:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin/
[port] => 4001
[ipv6] => 
)
[Tue Aug 27 16:40:10 PDT 2019] Standalone mode.
[Tue Aug 27 16:40:10 PDT 2019] Standalone mode.
[Tue Aug 27 16:40:10 PDT 2019] Standalone mode.
[Tue Aug 27 16:40:10 PDT 2019] Standalone mode.
[Tue Aug 27 16:40:10 PDT 2019] Multi domain='DNS:organizr.mydomain.com,DNS:nextcloud.mydomain.com,DNS:tautulli.mydomain.com,DNS:ombi.mydomain.com'
[Tue Aug 27 16:40:10 PDT 2019] Getting domain auth token for each domain
[Tue Aug 27 16:40:12 PDT 2019] Getting webroot for domain='organizr.mydomain.com'
[Tue Aug 27 16:40:12 PDT 2019] Getting webroot for domain='nextcloud.mydomain.com'
[Tue Aug 27 16:40:12 PDT 2019] Getting webroot for domain='tautulli.mydomain.com'
[Tue Aug 27 16:40:12 PDT 2019] Getting webroot for domain='ombi.mydomain.com'
[Tue Aug 27 16:40:12 PDT 2019] Verifying: organizr.mydomain.com
[Tue Aug 27 16:40:12 PDT 2019] Standalone mode server
[Tue Aug 27 16:40:16 PDT 2019] organizr.mydomain.com:Verify error:Invalid response from https://organizr.mydomain.com/.well-known/acme-challenge/jU-F0nzq3xNYEOwmAYXUO8tLA5zNraKPLCQYXdeegfU [xxx.xxx.xxx.myip]: 
[Tue Aug 27 16:40:16 PDT 2019] Please check log file for more details: /tmp/acme/ACME-MYDOMAIN-COM-PROD/acme_issuecert.log

Here are the additional details from acme_issuecert.log:

Any help would be very much appreciated!

Edit: attempt at network diagram

2

Please provide the output of haproxy -vv, the full configuration of haproxy and the output of acme.sh --version.