/usr/lib/x86_64-linux-gnu/libKPropertyWidgets3.so.4 is in libkpropertywidgets3-4 3.1.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libKPropertyWidgets3.so.4.1.0
/usr/lib/x86_64-linux-gnu/libKPropertyWidgets3.so.4.1.0