[lms] 1.10.4 bład sql w helpdesku

takie coś mi wyskoczyło:

Wystąpiły błędy w obsłudze bazy danych! *Zapytanie:* (SELECT rtmessages.id AS id, mailfrom, subject, body, createtime, CONCAT(UPPER(customers.lastname), ' ', customers.name) AS customername, userid, users.name AS username, customerid FROM rtmessages LEFT JOIN customers ON (customers.id = customerid) LEFT JOIN users ON (users.id = userid) WHERE ticketid = '667') UNION (SELECT rtnotes.id AS id, NULL, NULL, body, createtime, NULL, userid, users.name AS username, NULL FROM rtnotes LEFT JOIN users ON (users.id = userid) WHERE ticketid = '667') ORDER BY createtime ASC *Błąd:* Illegal mix of collations for operation 'UNION'

!DSPAM:48a337af202362226814302!