Grub error: Failed to get canonical path of 'none'

[Eduardo Thales <eduardothalesms@gmail.com>]

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I'm trying to install Guix SD with Grub on UEFI and my stuck in this error:

*/gnu/store/4c7x0ji4mni5dayf8ig9rssk50pjims1g-grub-efi-2.02/sbin/grub-install:
error: failed to get canonical path of 'none'.*
*guix system: error: failed to install
bootloader /gnu/store/6kn22v26i3c6a7h41268z11zkki8y9jk-bootloader-installer*

Here is my config:
*(use-modules (gnu) (gnu system nss))*
*(use-service-modules networking ssh)*
*(use-package-modules admin bootloaders)*

*(operating-system*
*  (host-name "AcerThales")*
*  (timezone "America/Sao_Paulo")*
*  (locale "pt_BR.utf8")*
*  (bootloader (grub-configuration (grub grub-efi)*
*                                  (device "/dev/sda1")))*

*  (file-systems (cons* (file-system*
*                                     (device "guix")*
*                                     (title 'label)*
*                                     (mount-point "/")*
*                                     (type "ext4"))*
*                          (file-system*
*                                     (device "home")*
*                                     (title 'label)*
*                                    (mount-point "/home")*
*                                   (type "ext4"))*
*                                 (file-system*
*                                    (device "/dev/sda1")*
*                                   (mount-point "/boot")*
*                                  (type "vfat"))*
*                               %base-file-systems))*

*  (users (cons (user-account*
*                (name "eduardo")*
*                (comment "Eu msm")*
*                (group "users")*
*                (supplementary-groups '("wheel" "netdev"*
*                                        "audio" "video"))*
*                (home-directory "/home/eduardo"))*
*               %base-user-accounts))*

*  (packages (cons* nss-certs                      *
*                   %base-packages))*

  ;; Allow resolution of '.local' host names with mDNS.
  (name-service-switch %mdns-host-lookup-nss))

I tried to follow what I found in the Reference Manual. Also, I tried to
set *(device "/dev/sda")* in *grub-configuration* but no luck. Can someone
give me some light? Thanks in advance

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