/usr/lib/x86_64-linux-gnu/libshotwell-plugin-common.so is in shotwell 0.28.2-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libshotwell-plugin-common.so.0
/usr/lib/x86_64-linux-gnu/libshotwell-plugin-common.so.0