Good afternoon, since last week we have a new installation going on our synology server, I have only been doing some setup and tests to figure out the application works, up until today everything was ok, today I was going over the email settings and templates without any major problems, then suddenly I started to receive the same error (down attached) by email several times, any help is well received!

[SELECT A3.staff_id AS lock__staff_id, A1.staff_id AS staff_id, A1.isoverdue AS isoverdue, A1.team_id AS team_id, A1.ticket_id AS ticket_id, A1.number AS number, A4.subject AS cdata__subject, A6.address AS user__default_email__address, A1.source AS source, A7.priority_color AS cdata__:priority__priority_color, A7.priority_desc AS cdata__:priority__priority_desc, A1.status_id AS status_id, A8.name AS status__name, A8.state AS status__state, A1.dept_id AS dept_id, B0.name AS dept__name, A5.name AS user__name, A1.lastupdate AS lastupdate, A1.isanswered AS isanswered, B1.firstname AS staff__firstname, B1.lastname AS staff__lastname, B2.name AS team__name, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_collaborator R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id) AS collab_count, (SELECT COUNT(R1.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) LEFT JOIN ost_attachment R1 ON (R1.type = 'H' AND R0.id = R1.object_id) WHERE Q8.ticket_id = A1.ticket_id AND R1.inline = 0) AS attachment_count, (SELECT COUNT(R0.id) AS count FROM ost_thread Q7 JOIN ost_ticket Q8 ON (Q7.object_type = 'T' AND Q7.object_id = Q8.ticket_id) LEFT JOIN ost_thread_entry R0 ON (Q7.id = R0.thread_id) WHERE Q8.ticket_id = A1.ticket_id AND NOT R0.flags & 4 != 0) AS thread_count FROM ost_ticket A1 JOIN (SELECT Q7.ticket_id FROM ost_ticket Q7 JOIN ost_ticket_status Q8 ON (Q7.status_id = Q8.id) WHERE Q8.state = 'closed' AND ((Q8.state = 'open' AND Q7.staff_id = 1) OR Q7.dept_id IN ('1', '4')) ORDER BY Q7.ASC LIMIT 5) A2 LEFT JOIN `ost_lock` A3 ON (A1.`lock_id` = A3.`lock_id` AND A3.`expire` > NOW()) LEFT JOIN `ost_ticket__cdata` A4 ON (A1.`ticket_id` = A4.`ticket_id`) JOIN `ost_user` A5 ON (A1.`user_id` = A5.`id`) LEFT JOIN `ost_user_email` A6 ON (A5.`default_email_id` = A6.`id`) LEFT JOIN `ost_ticket_priority` A7 ON (A4.`priority` = A7.`priority_id`) JOIN `ost_ticket_status` A8 ON (A1.`status_id` = A8.`id`) JOIN `ost_department` B0 ON (A1.`dept_id` = B0.`id`) LEFT JOIN `ost_staff` B1 ON (A1.`staff_id` = B1.`staff_id`) LEFT JOIN `ost_team` B2 ON (A1.`team_id` = B2.`team_id`) WHERE A1.`ticket_id` = A2.`ticket_id` GROUP BY A3.`staff_id`, A1.`staff_id`, A1.`isoverdue`, A1.`team_id`, A1.`ticket_id`, A1.`number`, A4.`subject`, A6.`address`, A1.`source`, A7.`priority_color`, A7.`priority_desc`, A1.`status_id`, A8.`name`, A8.`state`, A1.`dept_id`, B0.`name`, A5.`name`, A1.`lastupdate`, A1.`isanswered`, B1.`firstname`, B1.`lastname`, B2.`name` ORDER BY A1. ASC]

Unknown column 'Q7.' in 'order clause' 
---- Backtrace ---- 
#0 (root)/include/mysqli.php(204): osTicket->logDBError('DB Error #1054', '[SELECT A3.sta...') #1 (root)/include/class.orm.php(3136): db_query('SELECT A3.staf...', true, true) 
#2 (root)/include/class.orm.php(3183): MySqlExecutor->execute() 
#3 (root)/include/class.orm.php(1868): MySqlExecutor->getArray() 
#4 (root)/include/class.orm.php(1818): HashArrayIterator->{closure}() 
#5 (root)/include/class.orm.php(1797): CallbackSimpleIterator->next() 
#6 (root)/include/class.orm.php(1806): CallbackSimpleIterator->rewind() 
#7 (root)/include/class.orm.php(1463): CallbackSimpleIterator->valid() 
#8 (root)/include/class.orm.php(1480): CachedResultSet->fillTo(9223372036854775807) 
#9 (root)/include/class.orm.php(1489): CachedResultSet->asArray() 
#10 (root)/include/staff/tickets.inc.php(570): CachedResultSet->getIterator() 
#11 (root)/scp/tickets.php(495): require_once('/volume1/web/os...') 
#12 (root)/scp/index.php(17): require('/volume1/web/os...') 
#13 {main}