Man pages matching name cgi::session::driver::chi in section 3pm:

CGI::Session::Driver::chi.3pm.en	debian 10 / libcgi-session-driver-chi-perl
CGI::Session::Driver::chi.3pm.en	debian 11 / libcgi-session-driver-chi-perl
CGI::Session::Driver::chi.3pm.en	debian 12 / libcgi-session-driver-chi-perl