I had a recent power outage and came back to some weirdness on the server. It is a single machine running a 3 disk ZFS pool.

I am getting the below error:
Failed to execute Proxmox Virtual Environment (\EFI\proxmox\6.8.12-8-pve\vmlinuz-6.8.12-8-pve): Not Found

I have tried PVE 6.8 as well as the previous 2 versions in the bootloader, all with similar vmlinuz-*-pve Not Found errors. I have gotten into a Mint live environment and lsblk shows no EFI partitions. I am not sure what went wrong or how to proceed. Note SDB is the live USB Mint drive.