/usr/share/doc/qtpfsgui/changelog.Debian.gz is in qtpfsgui 2.4.0-8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/qtpfsgui/../luminance-hdr/changelog.Debian.gz
/usr/share/doc/qtpfsgui/../luminance-hdr/changelog.Debian.gz