Roundcube Error: New DA user-account, new emailaddress: Webmail login fail

Code:

Aug 28 12:01:02 server dovecot[20204]: auth-worker(29636): shadow(info@newdomain.com,::1,<XEtLX81XMIAAAAAAAAAAAAAAAAAAAAAB>): unknown user
Aug 28 12:01:02 server dovecot[20204]: auth-worker(29636): passwd(info@newdomain.com,::1,<XEtLX81XMIAAAAAAAAAAAAAAAAAAAAAB>): unknown user
Aug 28 12:01:02 server dovecot[20204]: imap-login: Login: user=<info@newdomain.com>, method=PLAIN, rip=::1, lip=::1, mpid=29637, secured, session=<XEtLX81XMIAAAAAAAAAAAAAAAAAAAAAB>
Aug 28 12:01:02 server dovecot[20204]: imap(info@newdomain.com): Logged out in=29 out=502

Code:

[28-Aug-2017 11:44:50 +0200]: <b4fqkqom> PHP Error: Failed to create new user in /var/www/html/roundcubemail-1.3.0/progr
am/lib/Roundcube/rcube_user.php on line 686 (POST /webmail/?_task=login&_action=login)
[28-Aug-2017 11:44:50 +0200]: <b4fqkqom> PHP Error: Failed to create a user record. Maybe aborted by a plugin? in /var/w
ww/html/roundcubemail-1.3.0/program/include/rcmail.php on line 650 (POST /webmail/?_task=login&_action=login)
[28-Aug-2017 11:44:55 +0200]: <b4fqkqom> DB Error: [1364] Field 'alias' doesn't have a default value (SQL Query: INSERT
INTO `users` (`created`, `last_login`, `useame`, `mail_host`, `language`) VALUES (now(), now(), 'info@newdomain.com'
, 'localhost', 'en_US')) in /var/www/html/roundcubemail-1.3.0/program/lib/Roundcube/rcube_db.php on line 542 (POST /webm
ail/?_task=login&_action=login)