/usr/lib/x86_64-linux-gnu/libladr.so.4 is in libladr4 0.0.200911a-2.1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libladr.so.4.0.0
/usr/lib/x86_64-linux-gnu/libladr.so.4.0.0