/usr/lib/x86_64-linux-gnu/libglobus_gass_cache.so is in libglobus-gass-cache-dev 8.1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libglobus_gass_cache.so.5.3.1
/usr/lib/x86_64-linux-gnu/libglobus_gass_cache.so.5.3.1