/usr/share/doc/yaws-mail/changelog.Debian.gz is in yaws-mail 2.0.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/yaws-mail/../erlang-yaws/changelog.Debian.gz
/usr/share/doc/yaws-mail/../erlang-yaws/changelog.Debian.gz