See if this helps.

my $title = $self->param(q{title});
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should be something like

my $q = $self->query;
my $title = $q->param(q{title});
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$self->param(xxx) returns params set by, say, your instance script. You need the params from the query which in CGI::A is in $self->query.

update: fixed $q->param(q{title});