Useradd: warning: the home directory already exists

After a clean install of jitsi on ubuntu 18.04 jigasi installation issues the following warnings:
useradd: warning: the home directory already exists.
Not copying any file from skel directory into it. The file:
/etc/jitsi/jicofo/sip-communicator.properties
exists for organizer authentification. The + sign appears in jitsi-meet but no action after invitation.

Below the link for the installation log.

jigasi.log
Thank you for your kind advice in advance.
Regards Toni