http://qs1969.pair.com?node_id=1213823


in reply to Re^2: Perl CGI.PM: Use of uninitialized value $vals
in thread Perl CGI.PM: Use of uninitialized value $vals

While you could certainly investigate and debug CGI.pm, you really shouldn't use -w on the shebang line (#!/usr/bin/perl -w) and use warnings; instead. See What's wrong with -w and $^W.