Comment 2 for bug 1802174

The error message at the bottom is key:

grub2-install: error: /boot/efi doesn't look like an EFI partition.

The storage config from the logs, is not configured for EFI:

storage:
  config:
  - {grub_device: true, id: sda, model: DELLBOSS VD, name: sda, ptable: gpt, serial: 8c52657e3d930010,
    type: disk, wipe: superblock}
  - {id: nvme0n1, model: Dell Express Flash NVMe P4500 4.0TB SFF, name: nvme0n1, serial: PHLF814200YA4P0IGN,
    type: disk, wipe: superblock}
  - {id: nvme1n1, model: Dell Express Flash NVMe P4500 4.0TB SFF, name: nvme1n1, serial: BTLF82250JCW4P0IGN,
    type: disk, wipe: superblock}
  - {id: nvme3n1, model: Dell Express Flash NVMe P4500 4.0TB SFF, name: nvme3n1, serial: BTLF82250J8L4P0IGN,
    type: disk, wipe: superblock}
  - {id: nvme2n1, model: Dell Express Flash NVMe P4500 4.0TB SFF, name: nvme2n1, serial: BTLF82250HW24P0IGN,
    type: disk, wipe: superblock}
  - {device: sda, id: sda-part1, name: sda-part1, number: 1, offset: 4194304B, size: 239981297664B,
    type: partition, uuid: 1a1779e5-236c-4fd8-b6ff-4da5bac297ea, wipe: superblock}
  - {fstype: xfs, id: sda-part1_format, label: '', type: format, uuid: 193b084d-151e-4a2b-832d-75c048f7404e,
    volume: sda-part1}
  - {device: sda-part1_format, id: sda-part1_mount, options: '', path: /, type: mount}

So it would appear that MAAS sent a non-UEFI config to a system that thought was in UEFI mode.