Theme " " is not found in ‘engrave-faces-current-preset-style’ or availible Emacs themes

[edrx]

`M-x engrave-faces-html-file' is not working here. Here's a sexp-based recipe for reproducing the error: when I try this,

(engrave-faces-html-file "/tmp/o.el" "/tmp/o.el.html" nil t)

I get this error:

if: Theme ‘      ’ is not found in ‘engrave-faces-current-preset-style’ or availible Emacs themes.

I tried to debug that myself by creating a file /tmp/o.el containing this,

' (progn
    (package-initialize)
    (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
    (package-refresh-contents)
    (package-install 'engrave-faces)
    (package-install 'eev)  ;; optional
    (eev-beginner)          ;; optional
    )

;; Optional - makes debugging easier
' (progn
    (load "engrave-faces-ansi.el")
    (load "engrave-faces-autoloads.el")
    (load "engrave-faces-html.el")
    (load "engrave-faces-latex.el")
    (load "engrave-faces.el")
    )

' (engrave-faces-html-file "/tmp/o.el" "/tmp/o.el.html" nil t)

and then I created a fake home directory in /tmp/fake-home-dir/, ran "HOME=/tmp/fake-home-dir/ emacs29 -Q /tmp/o.el" and tried to run each sexp with my favorite variant of `C-x C-e' with debug-on-error set to t, but for reasons that I don't understand I couldn't get a backtrace... so this error is above my debugging skills. =(

Note: this may be related to this old bug -

#10

maybe it wasn't completely fixed?...