

Look for an error in the journal as soon as the error you mentioned happens. Maybe some details get saved in the journal. Post it somewhere online like pastebin, then we can maybe tell you what to check next
Like others have said, what you are experiencing is super unusual
Not that I’m using them, but what about these two?
https://www.truenas.com/truenas-scale/
https://www.proxmox.com/en/