robots.txt cannot be fetched
robots.unreachable
What it means
robots.txt answered with status 403 or did not answer. Under RFC 9309 crawlers then treat the whole site as disallowed.
Priority
P1
How to fix it
Run a free check of your page. The report shows the evidence for this finding on your site and a ready-to-paste fix: a robots.txt change, a Cloudflare rule, JSON-LD markup, an llms.txt draft or a short instruction.
How to confirm the fix
After the change, press "Check again" on the report: it lists what was fixed and how the score changed.