$decoded is not $resluts which is not $results 
 my $resluts = $json->decode($resp->decoded_content());
 my $fname = $decoded->{'firstname'};

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500 just means the server you're talking to isn't written well, some kind of error occurred , nothing for you to guess about , its documentation reading time -- if server doesn't come with documentation contact support

In reply to Re: http post error by Anonymous Monk
in thread http post error by bigup401

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