/usr/share/doc/libglobus-gass-server-ez-dev/changelog.Debian.gz is in libglobus-gass-server-ez-dev 4.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libglobus-gass-server-ez-dev/../libglobus-gass-server-ez2/changelog.Debian.gz