passkey_signup_email_taken

An account already exists for this email.

HTTP status	`409`
`type`	`conflict`
`code`	`passkey_signup_email_taken`
Default message	An account already exists for this email. Sign in instead.

When this happens

You tried to sign up with an email that already has a Harmont account, possibly created through Google or GitHub.

Sign in with the existing method instead of signing up. If you don't remember which method you used, start account recovery for that email.

passkey_user_verification_required

The authenticator signed in without user verification.

passkey_last_credential

You cannot remove your only remaining sign-in method.