Convert pptx to html but no css and images

I convert pptx to html with command like this

soffice --headless --convert-to html ./air_test.pptx --outdir /data/

then I got a bare HTML without any CSS and images.

when I try to use some filters ,like :

soffice --headless --convert-to html:HTML:EmbedImages ./air_test.pptx --outdir /data/

then I got errors.

convert /data/air_test.pptx → /data//air_test.html using filter : HTML:EmbedImages
Overwriting: /data//air_test.html
Error: Please verify input parameters… (SfxBaseModel::impl_store <file:///data//air_test.html> failed: 0xc10)

how can I get the whole HTML with style and images?

what filters are supported by soffice?

I’m using CentOS 3.10