/usr/lib/systempreferences.app/libPreferencePanes.so is in systempreferences.app 1.1.0-2build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/systempreferences.app/../GNUstep/Frameworks/PreferencePanes.framework/Versions/Current/libPreferencePanes.so