There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.
To install Twiggy::TLS, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Twiggy::TLS
CPAN shell
perl -MCPAN -e shell install Twiggy::TLS
For more information on module installation, please visit the detailed CPAN module installation guide.