Nginx error connect() to unix:/var/run/php5-fpm.sock failed (13: Permission denied)

---
user www www;
worker_processes 1;

location / {
root /usr/home/user/public_html;
}
location ~ [^/]\.php(/|$) {
fastcgi_split_path_info ^(.+?\.php)(/.*)$;
fastcgi_param SCRIPT_FILENAME /usr/home/user/public_html$fastcgi_script_name;
include fastcgi_params;
}

---Resolve---

or
depending on your version.
---
Uncomment all permission lines:
---
Restart fpm:
sudo service php5-fpm restart
or
sudo service php7.0-fpm restart