/usr/share/doc/liblastfm-fingerprint5-dbg/changelog.Debian.gz is in liblastfm-fingerprint5-dbg 1.0.9-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/liblastfm-fingerprint5-dbg/../liblastfm5-1/changelog.Debian.gz