I have the same issue:
PHP 7.2.10
mysql Ver 15.1 Distrib 5.5.60-MariaDB
[SELECT COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THEN A1.ticket_id END) AS q20, COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THEN A1.ticket_id END) AS q21, COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THEN A1.ticket_id END) AS q22, COUNT(DISTINCT CASE WHEN A2.state = 'open' AND A2.state = 'open' AND A1.dept_id = 7 THEN A1.ticket_id END) AS q23, COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THEN A1.ticket_id END) AS q24, COUNT(DISTINCT CASE WHEN THEN A1.ticket_id END) AS q25, COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THEN A1.ticket_id END) AS q26, COUNT(DISTINCT CASE WHEN A2.state = 'open' AND A1.isanswered = '1' AND A2.state = 'open' AND A1.isanswered = '1' AND A2.id IN (11) THEN A1.ticket_id END) AS q30, COUNT(DISTINCT CASE WHEN A2.state = 'open' THEN A1.ticket_id END) AS q1, COUNT(DISTINCT CASE WHEN A2.state = 'open' AND A2.state = 'open' AND A1.isanswered = '0' THEN A1.ticket_id END) AS q2, COUNT(DISTINCT CASE WHEN (A1.team_id IN (8) OR A1.staff_id IN (9)) AND A2.state = 'open' AND (A1.team_id IN (8) OR A1.staff_id IN (9)) AND A2.state = 'open' AND A1.staff_id IN (9) THEN A1.ticket_id END) AS q6, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-06-15 00:00:00' AND '2019-06-15 23:59:59' THEN A1.ticket_id END) AS q9, COUNT(DISTINCT CASE WHEN A2.state = 'open' AND A2.state = 'open' AND A1.isanswered = '1' THEN A1.ticket_id END) AS q3, COUNT(DISTINCT CASE WHEN (A1.team_id IN (8) OR A1.staff_id IN (9)) AND A2.state = 'open' AND (A1.team_id IN (8) OR A1.staff_id IN (9)) AND A2.state = 'open' AND NOT A1.staff_id IN (9) THEN A1.ticket_id END) AS q7, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-06-14 00:00:00' AND '2019-06-14 23:59:59' THEN A1.ticket_id END) AS q10, COUNT(DISTINCT CASE WHEN A2.state = 'open' AND A2.state = 'open' AND A1.isoverdue = '1' THEN A1.ticket_id END) AS q4, COUNT(DISTINCT CASE WHEN (A1.team_id IN (8) OR A1.staff_id IN (9)) AND A2.state = 'open' THEN A1.ticket_id END) AS q5, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-06-10 00:00:00' AND '2019-06-16 23:59:59' THEN A1.ticket_id END) AS q11, COUNT(DISTINCT CASE WHEN A2.state = 'closed' THEN A1.ticket_id END) AS q8, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-06-01 00:00:00' AND '2019-06-30 23:59:59' THEN A1.ticket_id END) AS q12, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-04-01 00:00:00' AND '2019-06-30 23:59:59' THEN A1.ticket_id END) AS q13, COUNT(DISTINCT CASE WHEN A2.state = 'closed' AND A2.state = 'closed' AND A1.closed BETWEEN '2019-01-01 00:00:00' AND '2019-12-31 23:59:59' THEN A1.ticket_id END) AS q14 FROM ost_ticket A1 JOIN ost_ticket_status A2 ON (A1.status_id = A2.id) LEFT JOIN ost_thread A3 ON (A3.object_type = 'T' AND A1.ticket_id = A3.object_id) LEFT JOIN ost_thread_referral A4 ON (A3.id = A4.thread_id) LEFT JOIN ost_staff A5 ON (A4.object_type = 'S' AND A4.object_id = A5.staff_id) LEFT JOIN ost_team A6 ON (A4.object_type = 'E' AND A4.object_id = A6.team_id) LEFT JOIN ost_department A7 ON (A4.object_type = 'D' AND A4.object_id = A7.id) WHERE (A2.state = 'open' AND (A1.staff_id = 9 OR A5.staff_id = 9 OR A1.team_id IN (8) OR A6.team_id IN (8))) OR A1.dept_id IN (4, 7, 11) OR A7.id IN (4, 7, 11)]
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'THEN A1.ticket_id END) AS q25, COUNT(DISTINCT CASE WHEN A1.dept_id = 7 THE' at line 1<br />
<br />
---- Backtrace ----<br />
#0 (root)/include/mysqli.php(199): osTicket->logDBError('DB Error #1064', '[SELECT COUNT(D...')<br />
#1 (root)/include/class.orm.php(3455): db_query('SELECT COUNT(DI...', true, true)<br />
#2 (root)/include/class.orm.php(3502): MySqlExecutor->execute()<br />
#3 (root)/include/class.orm.php(2085): MySqlExecutor->getArray()<br />
#4 (root)/include/class.orm.php(2035): HashArrayIterator->{closure}()<br />
#5 (root)/include/class.orm.php(2014): CallbackSimpleIterator->next()<br />
#6 (root)/include/class.orm.php(2023): CallbackSimpleIterator->rewind()<br />
#7 (root)/include/class.orm.php(1695): CallbackSimpleIterator->valid()<br />
#8 (root)/include/class.orm.php(1705): CachedResultSet->fillTo(9223372036854775807)<br />
#9 (root)/include/class.orm.php(1328): CachedResultSet->asArray()<br />
#10 (root)/include/class.orm.php(1351): QuerySet->all()<br />
#11 (root)/include/class.search.php(925): QuerySet->one()<br />
#12 (root)/include/class.search.php(865): SavedQueue::counts(Object(StaffSession), true)<br />
#13 (root)/include/staff/templates/queue-tickets.tmpl.php(96): SavedQueue->getCount(Object(StaffSession))<br />
#14 (root)/scp/tickets.php(526): require_once('/opt/osTicket-1...')<br />
#15 {main}