perl error messages are easy, just use splain

But the problem with that error message, is it's a LWP error message, probably one you shouldn't ever see

http://search.cpan.org/grep?cpanid=GAAS&release=HTTP-Message-6.03&string=void&i=1&n=1&C=0

Carp::carp("Useless content call in void context") if $^W;
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which begs the question, why did you(our program) turn on global warnings, did you want to see that error message?

What you should do, is don't turn on global warnings , don't use -W on the shebang line (see perlrun), or don't turn on $^W

If you want warnings in your program use warnings;

More on this in don't turn on warnings for code you did not write

See also How do I post a question effectively?, Corion on how to report-a-bug, not to ask a question, ask question effectively