connect() to unix:/var/run/ajenti-v-unicorn-exampledomain-ruby-unicorn-0.sock failed

[tonbo]

Ubuntu16.04+nginx+unicorn+redmine

I installed redmine in my server.
But when I use ajenti-v settings from websites menu-domain MANAGE button-Content tub, and added ruby-Unicorn module.
But server does not work and there are logs like this,
connect() to unix:/var/run/ajenti-v-unicorn-exampledomain-ruby-unicorn-0.sock failed

I checked the directory and could not fine any socket file in /var/run/.
I just understand no sock file there. But how can I connect nginx-unicorn using ajenti-v module and configulation pannel in Ajenti?
If I need extra setting or files, would someone help me?