Tealk I downloaded your key and checked the notations. Many of your DNS claims contain an additional space between the URI and the ?type=TXT, which makes them invalid. This is not gracefully handled by keyoxide, unfortunately.
You can check your notations with this: https://docs.keyoxide.org/guides/openpgp-profile-gnupg/#Listing_identity_claims
First, remove all incorrect DNS claims with https://docs.keyoxide.org/guides/openpgp-profile-gnupg/#Deleting_an_identity_claim
Then, add them again with the correct format.
Also, you have two versions of each DNS claim on your key, one with the proof@metacode.biz namespace, and one with the proof@ariadne.id namespace. Both are supported, but you should probably only have one claim per domain on your key. So, decide for one namespace (proof@ariadne.id is the current standard) and delete the claim whith the other namespace.