Error: http error 500

I upgrade a new version 3.2.1.1 but have a problem, when search ejecute:
Stack trace:
#0 /home/eventas/public_html/593 in /home/eventas/public_html/593dp.com/lib/pkp/classes/db/DAO.inc.php on line 703
[04-Oct-2020 16:32:23 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:32:25 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:32:36 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:33:36 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:33:57 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:34:35 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:35:48 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:37:04 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:37:40 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:43:02 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:44:35 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:45:08 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:45:52 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:46:43 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:46:52 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:47:01 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:48:50 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:49:33 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:49:35 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:49:52 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:50:23 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:51:55 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:56:06 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:56:21 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 16:57:30 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 17:00:29 UTC] PHP Fatal error: Uncaught Exception: DB Error: Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_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) = 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 /home/eventas/public_html/593dp.com/lib/pkp/classes/db/DAO.inc.php:703
Stack trace:
#0 /home/eventas/public_html/593 in /home/eventas/public_html/593dp.com/lib/pkp/classes/db/DAO.inc.php on line 703
[04-Oct-2020 17:01:38 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 17:02:06 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54
[04-Oct-2020 17:02:07 UTC] PHP Deprecated: Non-static method PKPApplication::getRequest() should not be called statically in /home/eventas/public_html/593dp.com/plugins/generic/registrationNotification/RegistrationNotificationPlugin.inc.php on line 54

Please your help.

Hi @edit593dp,

The relevant message is this one:

PHP Fatal error: Uncaught Exception: DB Error: Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT)

See e.g. this thread: [OJS 3.2.1.1] Blank, white page ("Search" function)

Regards,
Alec Smecher
Public Knowledge Project Team