/var/lib/ghostscript/CMap/UniCNS-UTF16-H is in poppler-data 0.4.7-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/poppler/cMap/Adobe-CNS1/UniCNS-UTF16-H
/usr/share/poppler/cMap/Adobe-CNS1/UniCNS-UTF16-H