Very likely a bug, thanks for reporting.
Importing my own nostr keys into nostr:nprofile1qqstxwlea9ah3u6kjjszu6a7lrnhqkfh8eptp2z6v0e9558tlkkl2rgpz4mhxue69uhk2er9dchxummnw3ezumrpdejqz9thwden5te0wfjkccte9ejxzmt4wvhxjme09em76u gives me an Error after Input my nsec! What did I do wrong?
Very likely a bug, thanks for reporting.
Thank You. Would be nice to see it fixed.