Creating Admin User

no its like atilganuser

error log file has this message
{“reqId”:“ZgvJ@Kg8AenWETd-eE8ROAAAAI0”,“level”:3,“time”:“2024-04-02T09:03:52+00:00”,“remoteAddr”:“*****”,“user”:“–”,“app”:“PHP”,“method”:“POST”,“url”:“/owncloud/index.php”,“message”:“chmod(): Permission denied at /var/www/html/owncloud/lib/private/Config.php#284”}

i gave even full control to all users but i get this message still