/usr/share/doc/lam4-dev/changelog.Debian.gz is in lam4-dev 7.1.4-3.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/lam4-dev/../liblam4/changelog.Debian.gz
/usr/share/doc/lam4-dev/../liblam4/changelog.Debian.gz