/usr/share/php/Sabre/ is in php-sabre-vobject 2.1.5-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Sabre/VObject/
/usr/share/php/Sabre/VObject/Component/
/usr/share/php/Sabre/VObject/Component.php
/usr/share/php/Sabre/VObject/Component/VAlarm.php
/usr/share/php/Sabre/VObject/Component/VCalendar.php
/usr/share/php/Sabre/VObject/Component/VCard.php
/usr/share/php/Sabre/VObject/Component/VEvent.php
/usr/share/php/Sabre/VObject/Component/VFreeBusy.php
/usr/share/php/Sabre/VObject/Component/VJournal.php
/usr/share/php/Sabre/VObject/Component/VTodo.php
/usr/share/php/Sabre/VObject/DateTimeParser.php
/usr/share/php/Sabre/VObject/Document.php
/usr/share/php/Sabre/VObject/ElementList.php
/usr/share/php/Sabre/VObject/FreeBusyGenerator.php
/usr/share/php/Sabre/VObject/Node.php
/usr/share/php/Sabre/VObject/Parameter.php
/usr/share/php/Sabre/VObject/ParseException.php
/usr/share/php/Sabre/VObject/Property/
/usr/share/php/Sabre/VObject/Property.php
/usr/share/php/Sabre/VObject/Property/Compound.php
/usr/share/php/Sabre/VObject/Property/DateTime.php
/usr/share/php/Sabre/VObject/Property/MultiDateTime.php
/usr/share/php/Sabre/VObject/Reader.php
/usr/share/php/Sabre/VObject/RecurrenceIterator.php
/usr/share/php/Sabre/VObject/Splitter/
/usr/share/php/Sabre/VObject/Splitter/ICalendar.php
/usr/share/php/Sabre/VObject/Splitter/SplitterInterface.php
/usr/share/php/Sabre/VObject/Splitter/VCard.php
/usr/share/php/Sabre/VObject/StringUtil.php
/usr/share/php/Sabre/VObject/TimeZoneUtil.php
/usr/share/php/Sabre/VObject/Version.php
/usr/share/php/Sabre/VObject/includes.php