/usr/share/php/Symfony/Component/PropertyAccess/Exception/ is in php-symfony-property-access 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/PropertyAccess/Exception/AccessException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/ExceptionInterface.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/InvalidArgumentException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/InvalidPropertyPathException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/NoSuchIndexException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/NoSuchPropertyException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/OutOfBoundsException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/RuntimeException.php
/usr/share/php/Symfony/Component/PropertyAccess/Exception/UnexpectedTypeException.php