I had this line in my emacs config
(set-frame-font "DejaVu Sans Mono-18" nil t)
now it seems that the DeaVu font is not available anymore
error: Font not available, #<font-spec nil nil DejaVu Sans Mono-18 nil nil nil nil nil nil nil nil nil ((:name . DejaVu Sans Mono-18) (:user-spec . DejaVu Sans Mono-18))>