Same here..maybe some relay issue?
Been getting this a lot lately..even on npubs that I have zapped numerous times..sometimes if I wait a while and try again it works (a loading issue I guess).
Sometimes no amount of waiting helps.
nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z
#amethyst
#zaps
#asknostr

Discussion
I assume it must be, but I can't identify which or why. I also have the issue that many npubs don't load completely and just stay as stock (robot) picture and npub string rather than nip05