Update and question:
1. I have a fresh install of i-MSCP 1.5.3 Build: 2018120800
2. I have copied from <source folder>/contrb/Listeners/Named/10_named_override_default_rr.pl in /etc/imscp/listeners.d/10_named_override_default_rr.pl with root:imscp
3. I have exceuted perl /var/www/imscp/engine/setup/imscp-reconfigure -danv and everything went well
4. I have opened panel, went to domain name, domains, add an A record for www zone and received the error Servers::named::bind::_compileZone: Couldn't compile the <my zone> zone: Unknown
I can't understand what I am doing wrong 
Thanks.