problem with letsencrypt 1.1.2 and cert renew

Generating 4096 bit RSA key for let's encrypt account...
openssl genrsa 4096 > "/usr/local/directadmin/conf/letsencrypt.key"
Generating RSA private key, 4096 bit long modulus
........................................................................................++
.................................++
e is 65537 (0x10001)
Account has been registered.
Requesting new certificate order...
Processing authorization for ftp.domain.com...
Waiting for domain verification...
Challenge is valid.
Challenge is valid.
Processing authorization for mail.domain.com...
Waiting for domain verification...
Challenge error: HTTP/1.1 100 Continue
Expires: Sun, 13 May 2018 04:11:41 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache

HTTP/1.1 200 OK
Server: nginx
Content-Type: application/json
Content-Length: 223
Boulder-Requester: 34863805
Link: <https://acme-v02.api.letsencrypt.org/acme/authz/OnDj6SSWemKXpyog4vt5b56tTXFyS8197l_fM-i610w>;rel="up"
Location: https://acme-v02.api.letsencrypt.org/acme/challenge/OnDj6SSWemKXpyog4vt5b56tTXFyS8197l_fM-i610w/4620758387
Replay-Nonce: gP3CyVOPceh3W0_eIImieXebIvjqwCM0GfaTzG0wT-c
X-Frame-Options: DENY
Strict-Transport-Security: max-age=604800
Expires: Sun, 13 May 2018 04:11:41 GMT
Cache-Control: max-age=0, no-cache, no-store
Pragma: no-cache
Date: Sun, 13 May 2018 04:11:41 GMT
Connection: keep-alive

{
 "type": "http-01",
 "status": "pending",
 "url": "https://acme-v02.api.letsencrypt.org/acme/challenge/OnDj6SSWemKXpyog4vt5b56tTXFyS8197l_fM-i610w/4620758387",
 "token": "ssuUGwoOOS5U1AOV4mto2BPJI9SEgXz2O1gquqDwGL4"
}. Exiting...
<br>

# ./build versions
Latest version of DirectAdmin: 1.53.0
Installed version of DirectAdmin: 1.53.0

Latest version of Let's Encrypt client: 1.1.2
Installed version of Let's Encrypt client: 1.1.2

Latest version of Apache: 2.4.33
Installed version of Apache: 2.4.33

Latest version of Comodo ModSecurity Rule Set: 1.164
Installed version of Comodo ModSecurity Rule Set: 1.164

Latest version of ProFTPD: 1.3.6
Installed version of ProFTPD: 1.3.6

Latest version of libpng: 1.6.34
Installed version of libpng: 1.6.34

Latest version of nghttp2: 1.31.1
Installed version of nghttp2: 1.31.1

Latest version of libspf2: 1.2.10
Installed version of libspf2: 1.2.10

Latest version of libjpeg: 9c
Installed version of libjpeg: 9c

Latest version of ModSecurity: 2.9.2
Installed version of ModSecurity: 2.9.2

Latest version of ICU4C: 58.2
Installed version of ICU4C: 58.2

Latest version of libxml2: 2.9.7
Installed version of libxml2: 2.9.7

Latest version of libxslt: 1.1.32
Installed version of libxslt: 1.1.32

Latest version of iconv: 1.15
Installed version of iconv: 1.15

Latest version of zlib: 1.2.11
Installed version of zlib: 1.2.11

Latest version of pigz: 2.4
Installed version of pigz: 2.4

Latest version of PCRE: 8.20
Installed version of PCRE: 8.20

Latest version of FreeType: 2.9.1
Installed version of FreeType: 2.9.1

Latest version of AWstats: 7.7
Installed version of AWstats: 7.7

Latest version of awstats_process.sh: 2.9
Installed version of awstats_process.sh: 2.9

Latest version of dovecot: 2.3.1
Installed version of dovecot: 2.3.1

Latest version of dovecot.conf: 0.2
Installed version of dovecot.conf: 0.2

Latest version of Exim: 4.91
Installed version of Exim: 4.91

Latest version of exim.conf: 4.5.9
Installed version of exim.conf: 4.5.9

Latest version of BlockCracking: 1.8
Installed version of BlockCracking: 1.8

Latest version of Easy Spam Fighter: 1.16
Installed version of Easy Spam Fighter: 1.16

Latest version of SpamAssassin: 3.4.1
Installed version of SpamAssassin: 3.4.1

Latest version of PHP 5.6: 5.6.36
Installed version of PHP 5.6: 5.6.36

Latest version of RoundCube webmail: 1.3.6
Installed version of RoundCube webmail: 1.3.6

Latest version of phpMyAdmin: 4.8.0.1-all-languages
Installed version of phpMyAdmin: 4.8.0.1-all-languages

If you want to update all the available versions run: ./build update_versions