/usr/share/doc/ladr4-apps/changelog.Debian.gz is in ladr4-apps 0.0.200911a-2.1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ladr4-apps/../libladr4/changelog.Debian.gz
/usr/share/doc/ladr4-apps/../libladr4/changelog.Debian.gz