Warning: mysqli_real_connect(): (HY000/1045): Access denied for user 'metkor_user'@'localhost' (using password: YES) in /home/osimcms/public_html/manage/lib/pyncer/db/mysqli.php on line 57

pyncer\cms\NO_INSTALL = 1

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