Sokuza isn't running on this machine.
We probed the known Sokuza ports on this browser's loopback addresses and got no valid response. Either Sokuza hasn't been installed yet, or it isn't started. Pick the option that matches.
Why can't it be detected?
The browser blocks cross-origin requests to your machine unless Sokuza explicitly allow-lists sokuza.ai. That's a feature, not a bug — it's what keeps other websites from scanning your localhost. If your Sokuza version is older than the one this page expects, pull and rebuild: git pull && npm run build.
Corporate VPNs, firewalls, and aggressive ad blockers sometimes strip the discovery response too. In that case, open Sokuza directly at http://localhost:24847.