proxmox-boot-uuids

I want to upgrade from PVE 8 to PVE 9. So as described I followed the procedure to check my system first. When running pve8to9 --full I get the following errors: INFO: Checking bootloader configuration... FAIL: systemd-boot meta-package installed. This will cause problems on upgrades of other...

Hi. I've just updated my Proxmox backup server via the gui and I got an issue in the end. I haven't restarted yet, since this reminds me on my pve server that didn't come up again after a regular update. So the question is: What do I have to do to fix this? Here's the output of my console...