Get simple field value with post id

The function second parameter is the “$post_id”. Ref. http://simple-fields.com/documentation/api/getting-values/simple_fields_value/

simple_fields_value("simple_field_slug", $post_id)

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)