public function actionLevelUp()
    {
        Yii::$app->session->set(Update::SESSION_KEY, 0);

        $error = '';
        $info = '';
        $dbVersion = 0;
        $mdVersion = $this->module->version;
        $dbQuery = (new Query())->from('{{%podium_config}}')->select('value')->where(['name' => 'version'])->limit(1)->one();
        if (!isset($dbQuery['value'])) {
            $error = Yii::t('podium/flash', 'Error while checking current database version! Please verify your database.');
        } else {
            $dbVersion = $dbQuery['value'];
            $result = Helper::compareVersions(explode('.', $mdVersion), explode('.', $dbVersion));
            if ($result == '=') {
                $info = Yii::t('podium/flash', 'Module and database versions are the same!');
            } elseif ($result == '<') {
                $error = Yii::t('podium/flash', 'Module version appears to be older than database! Please verify your database.');
            }
        }

        Yii::$app->session->set(Update::SESSION_VERSION, $dbVersion);

        return $this->render('level-up', [
            'currentVersion' => $mdVersion,
            'dbVersion' => $dbVersion,
            'error' => $error,
            'info' => $info
        ]);
    }