<br />
<b>Fatal error</b>:  Uncaught Exception: DB Error: Illegal mix of collations (utf8mb3_unicode_ci,IMPLICIT) and (utf8mb3_general_ci,IMPLICIT) for operation '=' Query: SELECT
				o.submission_id,
				MAX(s.context_id) AS journal_id,
				MAX(i.date_published) AS i_pub,
				MAX(p.date_published) AS s_pub,
				COUNT(*) AS count
			FROM
				submissions s
				JOIN publications p ON (p.publication_id = s.current_publication_id)
				JOIN publication_settings ps ON (ps.publication_id = p.publication_id AND ps.setting_name='issueId')
				JOIN issues i ON (CAST(i.issue_id AS CHAR(20)) = ps.setting_value)
				JOIN submission_search_objects o ON (s.submission_id = o.submission_id)
				NATURAL JOIN submission_search_object_keywords o0 NATURAL JOIN submission_search_keyword_list k0
			WHERE
				s.status = 3 AND
				i.published = 1 AND k0.keyword_text = ? AND i.journal_id = ?
			GROUP BY o.submission_id
			ORDER BY count DESC
			LIMIT 500 in /var/www/html/lib/pkp/classes/db/DAO.inc.php:703
Stack trace:
#0 /var/www/html/lib/pkp/classes/db/DAO.inc. in <b>/var/www/html/lib/pkp/classes/db/DAO.inc.php</b> on line <b>703</b><br />