We have some mobile-friendly issues affecting /domains/.well-known/
This page simply displays:
Index of /domains/.well-known
Parent Directory (a link)
pki-validation/ (a link)
Do the mobility issues for this page affect the site overall? i.e. will there be any penalty that affects the site, or is the penalty applied to the page only?
Should I add this page to the blocked pages in robots.txt?
Mobile-issues that affect a single page, affect that page, not the entire site.
However, /domains/.well-known/ presumably doesn't have anything to do with your public facing website anyway? The .well-known and pki-validation directories are used when SSL certs are auto-renewed - to validate access.
Why do you have directory listings enabled? (You probably should not.) If directory listings are disabled then the search engines would receive a 403 Forbidden response and you wouldn't be getting this message reported in GSC in the first place.
In other words, include this at the top of your .htaccess file:
Options -Indexes
If you have certain directories that you want to see a server generated directory listing, then enable this on a per-directory basis.
