/usr/lib/x86_64-linux-gnu/liblouisutdml.so.6 is in liblouisutdml6 2.5.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/liblouisutdml.so.6.0.8
/usr/lib/x86_64-linux-gnu/liblouisutdml.so.6.0.8