Bluetooth error at startup

I keep getting a warning message at startup:

g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.blueman.Mechanism was not provided by any .service files (2)

Even though this shows, I have no problems using bluetooth, it’s only annoying to get this message and I want to fix it.

Here’s my system.scm

;; This is an operating system configuration generated
;; by the graphical installer.
;;
;; Once installation is complete, you can learn and modify
;; this file to tweak the system configuration, and pass it
;; to the 'guix system reconfigure' command to effect your
;; changes.


;; Indicate which modules to import to access the variables
;; used in this configuration.
(use-modules (gnu)
	     (nongnu packages linux)
	     (gnu packages linux)
	     (gnu packages audio)
	     (gnu packages networking))

(use-service-modules cups desktop networking ssh xorg)

(operating-system
 (kernel linux)
 (firmware (list linux-firmware))
  (locale "en_US.utf8")
  (timezone "America/Santiago")
  (keyboard-layout (keyboard-layout "us"))
  (host-name "juanpablo")

  ;; The list of user accounts ('root' is implicit).
  (users (cons* (user-account
                  (name "juanpablo")
                  (comment "Juan Pablo")
                  (group "users")
                  (home-directory "/home/juanpablo")
                  (supplementary-groups '("wheel" "netdev" "audio" "video")))
                %base-user-accounts))

  ;; Packages installed system-wide.  Users can also install packages
  ;; under their own account: use 'guix search KEYWORD' to search
  ;; for packages and 'guix install PACKAGE' to install a package.
  (packages (append (list (specification->package "emacs")
                          (specification->package "emacs-exwm")
                          (specification->package
                           "emacs-desktop-environment")
                          (specification->package "bluez")
                          (specification->package "bluez-alsa")
                          (specification->package "blueman")
			  )
		          
		    %base-packages))

  ;; Below is the list of system services.  To search for available
  ;; services, run 'guix system search KEYWORD' in a terminal.
  (services
   (append (list (service gnome-desktop-service-type)

                 ;; To configure OpenSSH, pass an 'openssh-configuration'
                 ;; record as a second argument to 'service' below.
                 (service openssh-service-type)
                 (service cups-service-type)
                 (set-xorg-configuration
                  (xorg-configuration (keyboard-layout keyboard-layout)))
		 (service bluetooth-service-type)
		 (service blueman-service-type)
		 )

	   

           ;; This is the default list of services we
           ;; are appending to.
           %desktop-services))
  (bootloader (bootloader-configuration
                (bootloader grub-efi-bootloader)
                (targets (list "/boot/efi"))
                (keyboard-layout keyboard-layout)))
  (swap-devices (list (swap-space
                        (target (uuid
                                 "939e1958-ff51-429b-8934-0508c120af98")))))

  ;; The list of file systems that get "mounted".  The unique
  ;; file system identifiers there ("UUIDs") can be obtained
  ;; by running 'blkid' in a terminal.
  (file-systems (cons* (file-system
                         (mount-point "/boot/efi")
                         (device (uuid "1EB2-58A7"
                                       'fat32))
                         (type "vfat"))
                       (file-system
                         (mount-point "/")
                         (device (uuid
                                  "38524a9a-825a-4794-9464-7acb796d2dac"
                                  'ext4))
                         (type "ext4")) %base-file-systems)))