The page does not say what language it is in
html-has-langOur plugin repairs this
The page is missing the setting that tells software which language it is written in.
Who this affects
Screen reader users, without it, the screen reader may read English text with a French or Spanish accent, making it incomprehensible.
Fix it in WordPress
WordPress outputs this automatically through language_attributes() in header.php. If it is missing, the theme's header.php is not calling it. Set the site language under Settings → General first, then check the theme.
What the fix is, technically
Add a lang attribute to the html element, for example <html lang="en">.
Or let the plugin do it
This is one of the failures AccessVane can repair for you. It changes the pages your server actually sends, not a script layered on top, and switching the repair off puts everything back exactly as your theme had it.
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