Sounds like one of the modules used by LWP was updated without having its dependencies updated to the new minimum required version. Could you please provide the output of the following command: 
perl -MLWP::UserAgent -e'
   END {
      for (keys(%INC)) {
         s{\.pm\z}{};
         s{/}{::}g;
         printf("%s %s\n", $_, $_->VERSION);
      }
   }

   LWP::UserAgent->new->get("http://www.perlmeme.org")
' | sort

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In reply to Re: LWP::UserAgent error Unexpected keys - LocalHost by ikegami
in thread LWP::UserAgent error Unexpected keys - LocalHost by Anonymous Monk

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