/usr/lib/x86_64-linux-gnu/libfreeimageplus.so.3 is in libfreeimageplus3 3.17.0+ds1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libfreeimageplus-3.17.0.so
/usr/lib/x86_64-linux-gnu/libfreeimageplus-3.17.0.so