/usr/lib/x86_64-linux-gnu/liblz4.so.1 is in liblz4-1 0.0~r131-2+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1
/usr/lib/x86_64-linux-gnu/liblz4.so.1.7.1