Prototype mismatch: sub main::head: none vs ($) at stats.cgi line 19

See CAVEAT in the LWP::Simple docs:

Note that if you are using both LWP::Simple and the very popular CGI.pm module, you may be importing a head function from each module, producing a warning like "Prototype mismatch: sub main::head ($) vs none". Get around this problem by just not importing LWP::Simple's head function, like so:

use LWP::Simple qw(!head);
use CGI qw(:standard);  # then only CGI.pm defines a head()
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As for "The first part of the script is" part:  why are you parsing the QUERY_STRING yourself, when you're using CGI.pm anyway — as the warning and your line my $id = param('id') indicates?  CGI.pm does the parsing already, so you can just drop that code...