Breaking: #83081 - Removed configuration option BE/fileExtensions/webspace¶
The file extensions which are allowed to be uploaded, which were previously available under
deny have been removed.
Using the old configuration option names will result in a PHP notice.
In Import/Export when uploading files
fileDenyPatternis used instead of
TYPO3 installations which have set this option in
LocalConfiguration.php previously, or extensions which
still use the old configuration option names.
fileDenyPattern which is used consistently throughout the core to deny specific file extensions.