-------------------------
fresh disco install:
-------------------------
root@test2:~# uname -a
Linux test2 4.15.0-64-generic #73-Ubuntu SMP Thu Sep 12 13:16:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
root@test2:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=19.04
DISTRIB_CODENAME=disco
DISTRIB_DESCRIPTION="Ubuntu 19.04"
root@test2:~# /usr/bin/dehydrated --version
# INFO: Using main config file /etc/dehydrated/config
# INFO: Using additional config file /etc/dehydrated/conf.d/config.sh
Dehydrated by Lukas Schauer
https://dehydrated.io

Dehydrated version: 0.6.2
GIT-Revision: unknown

OS: Ubuntu 19.04
Used software:
 bash: 5.0.3(1)-release
 curl: curl 7.64.0
 awk: mawk 1.3.3 Nov 1996, Copyright (C) Michael D. Brennan
 sed: sed (GNU sed) 4.7
 mktemp: mktemp (GNU coreutils) 8.30
 grep: grep (GNU grep) 3.3
 diff: diff (GNU diffutils) 3.7
 openssl: OpenSSL 1.1.1b  26 Feb 2019
 
root@test2:~# /usr/bin/dehydrated --register --accept-terms
# INFO: Using main config file /etc/dehydrated/config
# INFO: Using additional config file /etc/dehydrated/conf.d/config.sh
+ Account already registered!

root@test2:~# /usr/bin/dehydrated -c
# INFO: Using main config file /etc/dehydrated/config
# INFO: Using additional config file /etc/dehydrated/conf.d/config.sh
Processing test2.exemple.com
 + Signing domains...
 + Generating private key...
 + Generating signing request...
 + Requesting new certificate order from CA...
  + ERROR: An error occurred while sending head-request to https://acme-v02.api.letsencrypt.org/acme/new-nonce (Status 000)

Details:


  + ERROR: An error occurred while sending post-request to https://acme-v02.api.letsencrypt.org/acme/new-order (Status 400)

Details:
HTTP/2 400
server: nginx
date: Wed, 25 Sep 2019 12:05:29 GMT
content-type: application/problem+json
content-length: 178
cache-control: public, max-age=0, no-cache
link: <https://acme-v02.api.letsencrypt.org/directory>;rel="index"
replay-nonce: 0101Ja-Em1z22OiKhp4h8QoCTUBU-qoKeGS-J-8nzMCcAzo

{
  "type": "urn:ietf:params:acme:error:malformed",
  "detail": "Malformed account ID in KeyID header URL: \"https://acme-v02.api.letsencrypt.org/acme/acct/\"",
  "status": 400
}

-------------------------
install proposed version:
-------------------------

Unpacking dehydrated (0.6.2-2ubuntu0.19.04.1) over (0.6.2-2) ...
Setting up dehydrated (0.6.2-2ubuntu0.19.04.1) ...
Press Return to continue, 'q' followed by Return to quit.
q
root@test2:~# /usr/bin/dehydrated --version
# INFO: Using main config file /etc/dehydrated/config
# INFO: Using additional config file /etc/dehydrated/conf.d/config.sh
Dehydrated by Lukas Schauer
https://dehydrated.io

Dehydrated version: 0.6.2
GIT-Revision: unknown

OS: Ubuntu 19.04
Used software:
 bash: 5.0.3(1)-release
 curl: curl 7.64.0
 awk: mawk 1.3.3 Nov 1996, Copyright (C) Michael D. Brennan
 sed: sed (GNU sed) 4.7
 mktemp: mktemp (GNU coreutils) 8.30
 grep: grep (GNU grep) 3.3
 diff: diff (GNU diffutils) 3.7
 openssl: OpenSSL 1.1.1b  26 Feb 2019

root@test2:~# /usr/bin/dehydrated -c
# INFO: Using main config file /etc/dehydrated/config
# INFO: Using additional config file /etc/dehydrated/conf.d/config.sh
Processing test2.exemple.com
 + Signing domains...
 + Generating private key...
 + Generating signing request...
 + Requesting new certificate order from CA...
 + Received 1 authorizations URLs from the CA
 + Handling authorization for test2.exemple.com
 + 1 pending challenge(s)
 + Deploying challenge tokens...
 + Responding to challenge for test2.exemple.com authorization...
 + Cleaning challenge tokens...
 + Challenge validation has failed :(
ERROR: Challenge is invalid! (returned: invalid) (result: {
  "type": "http-01",
  "status": "invalid",
  "error": {
    "type": "urn:ietf:params:acme:error:dns",
    "detail": "DNS problem: NXDOMAIN looking up A for test2.exemple.com",
    "status": 400
  },
  "url": "https://acme-v02.api.letsencrypt.org/acme/chall-v3/497270152/tWoMkw",
  "token": "6ac7_UZoEkYC5_qfwsJ1jZWALposWauBxZOKgtieUIA"
})


Bug is fixed with the proposed package