Cannot install HA Core 2024.1.5 (Proxmox VM)

Last saturday I moved from supervised to HA-OS 11.4 in a Proxmox VM. Everything worked fine so far, I even installed a couple of updates (for integrations, that is).

Whenever I try to install HA Core Update 2024.1.5, it starts installing, but after around 30 seconds the VM gets shut down. When I start it manually, 2024.1.4 is still active.
I can see no errors in the log file (they start at boot time)

What should I do? Where do I get better logs?

Welcome Thomas!

Could this be the empty Yaml files issue? Do you have access to the rollback log file in /config directory?