/usr/share/php/Symfony/Component/HttpFoundation/File/ is in php-symfony-http-foundation 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/AccessDeniedException.php
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/FileException.php
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/FileNotFoundException.php
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/UnexpectedTypeException.php
/usr/share/php/Symfony/Component/HttpFoundation/File/Exception/UploadException.php
/usr/share/php/Symfony/Component/HttpFoundation/File/File.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesser.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/ExtensionGuesserInterface.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/FileinfoMimeTypeGuesser.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeExtensionGuesser.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesser.php
/usr/share/php/Symfony/Component/HttpFoundation/File/MimeType/MimeTypeGuesserInterface.php
/usr/share/php/Symfony/Component/HttpFoundation/File/Stream.php
/usr/share/php/Symfony/Component/HttpFoundation/File/UploadedFile.php