Currently there are many (54) duplicate IDs on a search page. These each count as an error with the automated A11y tools.
(https://127.0.0.1:5000/search?q=&l=list&p=1&s=10&sort=newest)
I think it is because the facet panel is duplicated... one for narrow screens, one for full-width.
Apparently even though one of the panels is always hidden, it still gets included in the scan.
Conversation about it here: dequelabs/axe-core#3363