[Dovecot] Error: auth(default): passwd-file ... is missing userdb info

Hallo

Have "pop3 plain login Error" and need some changes somewhere... ?where? Please see log down nora

--- dovecot.log --- 20 14:17:23 Error: auth(default): passwd-file /etc/dovecot/passwd: User modernlove@verben.ch is missing userdb info dovecot: Sep 20 14:19:16 Error: Logins with UID 0 not permitted (user modernlove@verben.ch)