It seems like a wrong make4ht installation. It cannot load any
extensions. You may try instead this:
tex4ebook -c mycfg.cfg draft "svg"
It should still produce SVG images for PDF files, but the compilation
will be slower.
The generated Epub file is quite large, here is a link:
https://www.t
I've originally sent my reply only to OP, so here it is again. Sorry
for the noise.
Hi,
I get the same error as you with this TeX file, so the issue is not
caused by a wrong installation of teX4ebook or make4ht. I've found
that the fatal error is caused by this line at the beginning of the TeX
fi
