When adding a content element to a page, there is a warning message displayed in the backend.

This message only occurs while also using the "gridelementsteam/gridelements" extension together with filefill. (I did not get it while using PHP 7.4.)

Filefill 4.1.1
PHP v8.1

Message is:
Core: Error handler (BE): PHP Warning: Undefinded array key "tableName" in /var/www/html/public/typo3conf/ext/filefill/Classes/Hooks/FlexFormToolsHook.php line 24

Sorry, I can not find the reason for it.