Edit file File name : SessionHandler.php Content :<?php /* * This file is part of the Kimai time-tracking app. * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace App\Security; use Doctrine\DBAL\Driver\PDOConnection; use Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler; class SessionHandler extends PdoSessionHandler { public function __construct($pdoOrDsn = null) { $lockMode = PdoSessionHandler::LOCK_NONE; if ($pdoOrDsn instanceof PDOConnection && $pdoOrDsn->getAttribute(\PDO::ATTR_DRIVER_NAME) === 'mysql') { $lockMode = PdoSessionHandler::LOCK_ADVISORY; } parent::__construct($pdoOrDsn, [ 'db_table' => 'kimai2_sessions', 'db_id_col' => 'id', 'db_data_col' => 'data', 'db_lifetime_col' => 'lifetime', 'db_time_col' => 'time', 'lock_mode' => $lockMode, ]); } } Save