/usr/lib/x86_64-linux-gnu/libtclcl.so.1 is in libtclcl1 1.20-6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libtclcl.so.1.20
/usr/lib/x86_64-linux-gnu/libtclcl.so.1.20