Why it matters
When a page has several nav or aside landmarks with no label, the landmark list shows identical entries and users cannot tell them apart.
How to fix it
Give each repeated landmark a distinct aria-label, such as "Primary" and "Footer".
Example
<nav aria-label="Primary">…</nav>
<nav aria-label="Footer">…</nav>References
More accessibility rules
void a11y reports 48 rules in this category. WCAG 2.2 AA through axe-core, plus checks axe can't do alone: visible keyboard focus, 24/44px target size on mobile, 320px reflow and disabled zoom.
html-lang-valid<html lang> is not a valid language tagdocument-titlePage has no <title>landmark-one-mainPage has no <main> landmarkregionContent is outside landmark regionspage-has-heading-onePage has no level-one headingheading-orderHeading levels skipempty-headingHeading is emptylistList contains invalid children