username and password required
Internal /api/internal/v1/sftp-authenticate (or equivalent) received a body without both username and password.
Why this happens
SFTP/PAM bridge called the website API with an empty credential field. Not a wrong-password failure (Unauthorized / auth reject). Related to needing a site password for SFTP (Set a username and password in account settings first).
Diagnose and fix
1. Member: set a password in Account Settings; reconnect the SFTP client with username + password.
2. Admin/node: ensure the ingest auth proxy forwards both fields.
3. See Connect with SFTP / SFTP on storage nodes.
4. Passwords must not use characters the SFTP stack rejects (see colon article).