/usr/share/doc/dancer-ircd/dancer-oper-guide.html/ is in dancer-ircd-doc 1.0.36-8ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/cmodes.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/commands.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/config.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/configlines.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/index.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/intro.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/misccommands.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/newopers.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/philosophy.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/umodelist.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/umodes.htm
/usr/share/doc/dancer-ircd/dancer-oper-guide.html/usercommands.htm