https://forum.proxmox.com/threads/task-error-start-failed-org-freedesktop-systemd1-unitexists-unit-scope-already-exists.53528/
TASK ERROR: start failed: org.freedesktop.systemd1.UnitExists: Unit scope already exists. | Proxmox...
https://man7.org/linux/man-pages/man5/org.freedesktop.systemd1.5.html
org.freedesktop.systemd1(5) - Linux manual page
freedesktoplinuxmanual