/usr/lib/x86_64-linux-gnu/libslvs.so.1 is in libslvs1 2.3+repack1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libslvs.so.2.3
/usr/lib/x86_64-linux-gnu/libslvs.so.2.3