yes you cannot put use strict; use warnings; bare statements without modifying your code. You need to declare all variables you use using my like in my $var = "foo";

Blindly develop on webserver is, in my experience, a frustrting operation: everything you get wrong you got a 500 error.

if you want to learn about Modern Perl Web you can start with perldancer.org and it's module Dancer2 it is pretty easy to use.

L*