can not boot new system

[kuresaru]

old system

debian 11

boot error

Booting the kernel .

<<<NixOS Stage 1 >>>

loading module virtio_balloon...
loading module virtio_console...
loading module virtio_rng...
loading module nvme...
loading module btrfs...
loading module dm_mod...
running udev...
Starting version 250.4
starting device mapper and LVM...
Scanning for Btrfs filesystems
mounting /dev/vda2 on /...
state 2 init script (/mnt-root//nix/store/zr9pd87311q94dp3n103r6chx3dk64sw-nixos-system-debian-22.05.3935.b3a8f7ed267/init) not found

An error occurred in stage 1 of the boot process, which must mount the root filesystem on '/mnt-root' and then start stage 2. Press one of the following keys:

    r) to reboot immediately
    *) to ignore the error and continue

[ghost]

@kuresaru what vps provider?

[kuresaru]

Linux KVM on my computer.