Fatal error: Declaration of SJBR\StaticInfoTables\Controller\ManagerController::getErrorFlashMessage() must be compatible with TYPO3\CMS\Extbase\Mvc\Controller\ActionController::getErrorFlashMessage(): string|bool in /var/www/sites/www.bg-clan.de/typo3conf/ext/static_info_tables/Classes/Controller/ManagerController.php on line 325