Warning: PDO::prepare(): MySQL server has gone away in /var/www/html/agricolas/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php on line 78

Warning: session_start(): Failed to read session data: user (path: /var/lib/php/sessions) in /var/www/html/agricolas/lib/pkp/classes/session/SessionManager.inc.php on line 58

Fatal error: Uncaught PDOException: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/agricolas/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:38 Stack trace: #0 /var/www/html/agricolas/lib/pkp/lib/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(38): PDO->__construct('mysql:host=loca...', 'ojsagricola', 'Us3ra2021@*', Array) #1 /var/www/html/agricolas/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(67): Doctrine\DBAL\Driver\PDOConnection->__construct('mysql:host=loca...', 'ojsagricola', 'Us3ra2021@*', Array) #2 /var/www/html/agricolas/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(100): Illuminate\Database\Connectors\Connector->createPdoConnection('mysql:host=loca...', 'ojsagricola', 'Us3ra2021@*', Array) #3 /var/www/html/agricolas/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connectors/Connector.php(50): Illuminate\Database\Connectors\Connector->tryAgainIfCausedByLostConnectio in /var/www/html/agricolas/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 671