/usr/lib/x86_64-linux-gnu/libgnuradio-fcdproplus.so.0 is in libgnuradio-fcdproplus0 0.0.1.1.2c80be-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgnuradio-fcdproplus.so.0.0.0