TYPO3-Error in Statistic-Module (Call to undefined method Doctrine\DBAL\Driver\Mysqli\MysqliStatement::fetchAllAssociative())

I've updated the ext in my dev-env to v4.0.1 and got an TYPO3-Error when i try to view statistics or consent-management in the backend module.

My System:

• Typo3 10.4.6
• DDEV Env
• webserver_type: nginx-fpm
• Mysql-Version: MySQL 5.5.5-10.2.32-MariaDB-1:10.2.32+maria~bionic-log
• PHP-Version: 7.2.31-1+020200514.41+debian101.gbpe2a56b

---

Call to undefined method Doctrine\DBAL\Driver\Mysqli\MysqliStatement::fetchAllAssociative()

in /var/www/html/public/typo3conf/ext/sg_cookie_optin/Classes/Service/OptinHistoryService.php line 266

  );
  $queryBuilder->addGroupBy('item_type');
  $queryBuilder->addGroupBy('item_identifier');

  return array_column($queryBuilder->execute()->fetchAllAssociative(), 'item_identifier');
 }

 /**
  * Gets the available versions

at SGalinski\SgCookieOptin\Service\OptinHistoryService::getItemIdentifiers(array('pid' => 54)) in /var/www/html/public/typo3conf/ext/sg_cookie_optin/Classes/Controller/ConsentController.php line 62

  $pageUid = (int) GeneralUtility::_GP('id');
  $this->view->assign(
   'identifiers', OptinHistoryService::getItemIdentifiers(
   [
    'pid' => $pageUid
   ]
  ));

  if ($pageUid) {