/usr/lib/x86_64-linux-gnu/libplasma-geolocation-interface.so.5 is in libplasma-geolocation-interface5 4:5.5.5.2-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libplasma-geolocation-interface.so.5.5.5