more LWP bit rot

Anyone know what this shit is and how to stop it?

Use of uninitialized value $vals in index at /usr/local/share/perl5/HTTP/Headers.pm line 277.
Use of uninitialized value $vals in concatenation (.) or string at /usr/local/share/perl5/HTTP/Headers.pm line 280.

I don't know when or why it started, but I've tried all of:

cpan
upgrade HTTP::Headers
upgrade LWP
upgrade HTML::HeadParser
upgrade LWP::UserAgent
upgrade HTTP
upgrade HTTP::Request

/usr/local/share/perl5/HTTP/Headers.pm:our $VERSION = "6.10";

This is on a CentOS machine, not a Mac, in case that matters.

Previously, previously.

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