Warning: mysqli_real_connect(): (HY000/2002): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/osimcms/public_html/manage/lib/pyncer/db/mysqli.php on line 57

NO_INSTALL = 1

You are seeing this because the installer was disabled in the configuration file and no database connection could be made.