hreflang has no x-default
hreflang.no_x_default
What it means
Language alternates are listed, but none is marked x-default for visitors whose language is not covered.
Priority
P3
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.