TYPO3 Core

If you browse folder through backend File module with a folder containing a viemo file wich doesn't exists anymore - or with a wrong ID - you have this error :

(1/1) #1476107295 TYPO3\CMS\Core\Error\Exception
PHP Warning: Trying to access array offset on value of type bool in typo3/sysext/core/Classes/Resource/OnlineMedia/Helpers/VimeoHelper.php line 54

How to reproduce :
1. Add a vimeo video file with File module
2. Change the data in Vimeo file in order to have a wrong Vimeo ID
3. In Maintenance module , remove temporary assets in /fileadmin/_processed_
4. In module 'File' browse the directory with the wrong Vimeo ID

This problem appears because method AbstractOEmbedHelper::getOEmbedData() can return a value ' array|bool|null ' and bool and null value are not checked.

This bug only happen with PHP V8.