I don't know that this has anything to do with the error that you are getting, but ua = LWP::UserAgent->new(keep_alive=>1); looked a bit odd to me. I don't see why would need this keep_alive option with value of 1. This evidently results in invoking some experimental stuff. I personally would not invoke experimental stuff without a very clear reason for doing so. From LWP::UserAgent
If the keep_alive option is passed in, then a LWP::ConnCache is set up (see conn_cache() method below). The keep_alive value is passed on as the total_capacity for the connection cache.
From LWP::ConnCache,
This module is experimental. Details of its interface is likely to change in the future.

In reply to Re: Useless content call in void context by Marshall
in thread Useless content call in void context by qingxia

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