Error: last_login_dict: Failed to write value: dict-server returned failure: sql dict: commit failed: Field 'password' doesn't have a default value

Hi, after upgrading my database I kept on getting those errors. It seems like later versions of databases have strict mode enabled by default and it must either be disabled or change the dovecot database schema. Besides the password, would anyone know what other fields must be changed to the dovecot schema and have a default value? Is there any other dovecot schema for strict mode?

Lefteris