/usr/lib/x86_64-linux-gnu/libqes.so is in libqes-dev 0.2.7-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libqes.so.0
/usr/lib/x86_64-linux-gnu/libqes.so.0