/usr/share/doc/libqtav-dev/changelog.Debian.gz is in libqtav-dev 1.12.0+ds-4build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libqtav-dev/../libqtav1/changelog.Debian.gz
/usr/share/doc/libqtav-dev/../libqtav1/changelog.Debian.gz