The onion service searchs returns a link to keys.openpgp.org
shows:
We found an entry for 2DA81D01455C3A0032198850F305447AF806D46B:
https://keys.openpgp.org/vks/v1/by-fingerprint/2DA81D01455C3A0032198850F305447AF806D46B
Probably because the link is not relative, but it should.