;;; ERROR: missing interface for module (charting)

[myglc2]

How do i fix these non-blocking "ERROR:" messages?

address@hidden ~/src/guix $ guix environment -e "(@ (gnu packages 
package-management) guix)" -M 4 -c 4
address@hidden ~/src/guix [env]$ make clean-go
address@hidden ~/src/guix [env]$ ./bootstrap
address@hidden ~/src/guix [env]$ ./configure --localstatedir=/var 
--sysconfdir=/etc
address@hidden ~/src/guix [env]$ make -j 10
[...]
  LOAD     (guix scripts build)
  LOAD     (guix scripts archive)
  LOAD     (guix scripts import)
  LOAD     (guix scripts package)
  LOAD     (guix scripts gc)
  LOAD     (guix scripts hash)
  LOAD     (guix scripts pack)
  LOAD     (guix scripts pull)
  LOAD     (guix scripts substitute)
  LOAD     (guix scripts authenticate)
  LOAD     (guix scripts refresh)
  LOAD     (guix scripts system)
  LOAD     (guix scripts lint)
  LOAD     (guix scripts challenge)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
[...]
  GUILEC   guix/scripts/challenge.go
  GUILEC   guix/scripts/import/cran.go
  GUILEC   guix/scripts/import/gnu.go
  GUILEC   guix/scripts/import/nix.go
  GUILEC   guix/scripts/import/hackage.go
  GUILEC   guix/scripts/import/stackage.go
  GUILEC   guix/scripts/import/elpa.go
  GUILEC   guix/scripts/environment.go
  GUILEC   guix/scripts/publish.go
  GUILEC   guix/scripts/edit.go
  GUILEC   guix/scripts/size.go
  GUILEC   guix/scripts/graph.go
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
guix/scripts/size.scm:211:2: warning: possibly unbound variable `make-page-map'
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)
;;; Failed to autoload make-page-map in (charting):
;;; ERROR: missing interface for module (charting)

I am using a recent origin/master commit ...

address@hidden ~/src/guix [env]$ git -C ~/.config/guix/latest log -n 1 --oneline
484f7a886 gnu: libtiff: Add fixes several security flaws.
address@hidden ~/src/guix [env]$ git -C ~/.config/guix/latest describe
v0.12.0-3556-g484f7a886

TIA - George