Kemungkinan ada kesalahan pada konfigurasi servernya, coba cek error log nya aja dulu, atau permission foldernya,
saya belum pernah install OJS sih jadi mungkin suhu yang lain bisa membantu menjelaskan
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11:01:52 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11:02:56 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11:04:17 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11:04:23 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11:08:15 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 11

34 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671
[05-Oct-2021 12:52:12 UTC] PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1115 Unknown character set: '' in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:78
Stack trace:
#0 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(78): PDO->prepare('set names '' co...', Array)
#1 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(76): Doctrine\DBAL\Driver\PDOConnection->prepare('set names '' co...')
#2 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/MySqlConnector.php(32): Illuminate\Database\Connectors\MySqlConnector->configureEncoding(Object(Doctrine\DBAL\Driver\PDOConnection), Array)
#3 /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/ConnectionFactory.php(184): Illuminate\Database\Connectors\MySqlConn in /home/unnxid/public_html/ejurnal/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671