/usr/share/doc/libwxbase2.8-dev/changelog.Debian.gz is in libwxbase2.8-dev 2.8.12.1+dfsg-2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwxbase2.8-dev/../wx2.8-headers/changelog.Debian.gz