The issue comes from
>>> BootResource.objects.all() <QuerySet [<BootResource: <BootResource name=grub-efi-signed/uefi, arch=amd64/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/hwe-20.04-lowlatency-edge, kflavor=lowlatency, base= rtype=0>>, <BootResource: <BootResource name=grub-efi/uefi, arch=arm64/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=grub-ieee1275/open-firmware, arch=ppc64el/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=pxelinux/pxe, arch=i386/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ga-20.04, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ga-20.04-lowlatency, kflavor=lowlatency, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/hwe-20.04, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/hwe-20.04-edge, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/hwe-20.04-lowlatency, kflavor=lowlatency, base= rtype=0>>]>
>>> BootResource.objects.get_usable_architectures() []
The issue comes from
>>> BootResource. objects. all() efi-signed/ uefi, arch=amd64/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ hwe-20. 04-lowlatency- edge, kflavor=lowlatency, base= rtype=0>>, <BootResource: <BootResource name=grub-efi/uefi, arch=arm64/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=grub- ieee1275/ open-firmware, arch=ppc64el/ generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=pxelinux/pxe, arch=i386/generic, kflavor=None, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ ga-20.04, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ ga-20.04- lowlatency, kflavor=lowlatency, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ hwe-20. 04, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ hwe-20. 04-edge, kflavor=generic, base= rtype=0>>, <BootResource: <BootResource name=ubuntu/focal, arch=amd64/ hwe-20. 04-lowlatency, kflavor=lowlatency, base= rtype=0>>]>
<QuerySet [<BootResource: <BootResource name=grub-
>>> BootResource. objects. get_usable_ architectures( )
[]