PGP key import error: 'no valid primary key self-signature'

Hi all,

I'm running the latest version of Mac OS and am repeatedly getting this error when I try to import my PGP key via terminal command "keybase pgp select."

▶ ERROR key generation error: no valid primary key self-signature or key(s) have expired (Signature failure in packet 1: rejecting insecure hash SHA1 (**[REDACTED KEY]**)) (error 905)

(Yes, I redacted my key above. That's not actually in the message.)
Anybody else having this issue? PGP import used to work for me, but then I got a new email address and needed to change it. Now I can't import it at all.

Thanks!

Reproduce the failure on macOS using the terminal command `keybase pgp select` and capture the reported primary-key self-signature and SHA1 errors. Check the issue's behavior when importing a PGP key after changing its email address; done means identifying a reproducible cause and restoring or clearly documenting successful import behavior.

Written by the indexing model from the issue text.