I searched for "goatcounter", and the main result is https://goatcounter.com. But that's not the correct link, it's not reachable.
The correct link would be https://www.goatcounter.com, so with www subdomain.
Checking on the GoatCounter webpage and docs, as well as other search engines, I only find the correct www result. That's why it seems like an issue on the Kagi search result side.
