First, thanks for the plugin!
I just today installed the Ace by Daisy app and the plugin. However, running my first ePUB through it came up with ONE single, solitary, but supposedly serious error, the gist of which is that I need to:
Add a 'schema:accessibilityHazard' metadata property to the Package Document
FWIW, the epub is fiction, primarily text, there are no flashing hazards or audio hazards or anything I can think of that could be hazardous about it! There are: a cover image (JPG), a title page image (PNG), a author photo (JPG) and one small vector image (SVG).
There is no audio, video, or any kind of script calling such, no links to external content, no embedded fonts, it's a very simple little epub of a 150 page novel.
I'm old and not so technical, could someone tell me how to add this to my epub with the Sigil metadata editor? Because if it's a problem on this epub, it's going to crop up in any other epub I make.
Or if it's not doable in the Sigil metadata editor, does anyone know what I should put in the .opf directly?
It sounds like I would need to declare a value of "none" for the 'schema:accessibilityHazard' metadata property.
EDIT: Can I just stick something like this in the .opf?
Code:
<meta property="schema:accessibilityHazard">none</meta>
I tried it and it seems to make ACE by Daisy happy. EPUBCheck didn't have anything against it either.