Thats the way lighttpd is configured for Pi-hole.
It doesnt know/isn't configured for that pihole.local domain and gives you the 404 eror page defined below:
thx for the quick heads-up
and yes - working with /admin/ in URL
Was bit confused about the page and the statement "not found on any blacklist" which leads in wrong direction for fixing
Yeah thats a remnant of how Pi-hole used to be default setup in the past.
In the past, blocked domains were redirected to the Pi-hole IP that would show the blocking page.
Currently, the default is to redirect to 0.0.0.0 and dont show a blocking page at all:
This because most ads come via HTTPS nowadays instead of HTTP which is nearly impossible to redirect properly to a HTTPS blocking page hosted on Pi-hole itself.
You would need to setup your own Certificate Authority, install your own cert on the clients and do whats called "man in the middle".