Fehler nach neu Installation 28.0.3

Hallo Zusammen,
ich habe nach der installation auf einem Debian mit Apache mehrere Fehler.
Ich fange einfach mal mit Folgendem an:

{"reqId":"LhPpSBlkbPHzeNewSnSk","level":3,"time":"2023-12-28T17:41:11+00:00","remoteAddr":"87.164.239.135","user":"nc-admin","app":"index","method":"GET","url":"/index.php/apps/theming/icon?v=57fafcc4","message":"Could not create folder \"/appdata_oc0vmps4hpzc/theming/global\"","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0","version":"28.0.1.1","exception":{"Exception":"OCP\\Files\\NotPermittedException","Message":"Could not create folder \"/appdata_oc0vmps4hpzc/theming/global\"","Code":0,"Trace":[{"file":"/var/www/nextcloud/lib/private/Files/AppData/AppData.php","line":147,"function":"newFolder","class":"OC\\Files\\Node\\Folder","type":"->"},{"file":"/var/www/nextcloud/apps/theming/lib/ImageManager.php","line":367,"function":"newFolder","class":"OC\\Files\\AppData\\AppData","type":"->"},{"file":"/var/www/nextcloud/apps/theming/lib/ImageManager.php","line":101,"function":"getRootFolder","class":"OCA\\Theming\\ImageManager","type":"->"},{"file":"/var/www/nextcloud/apps/theming/lib/Controller/IconController.php","line":168,"function":"getImage","class":"OCA\\Theming\\ImageManager","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"getTouchIcon","class":"OCA\\Theming\\Controller\\IconController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1069,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":39,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/lib/private/Files/Node/Folder.php","Line":162,"message":"Could not create folder \"/appdata_oc0vmps4hpzc/theming/global\"","exception":[],"CustomMessage":"Could not create folder \"/appdata_oc0vmps4hpzc/theming/global\""},"id":"659466ba90cde"}

Ich habe allerdings noch keinen schimmer was er überhaupt von mir will und wonach ich suchen soll.
Kann mir jemand einen Tip geben?
MFG
Jens

Die Berechtigungen stimmen nicht.
Der Webserver muss in alle Ordner schreiben dürfen und muss der Besitzer sein.