/usr/lib/x86_64-linux-gnu/libcplui.so.26 is in libcplui26 7.1-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libcplui.so.26.1.0
/usr/lib/x86_64-linux-gnu/libcplui.so.26.1.0