While I was trying to install Imager::QRCode using cpan, I have this problem: failed with code[400] message[URL must be absolute]
Searching online I found that my urllist for cpan is empty. To correct problem:
run this command with in cpan O conf urllist push "Your_cpan_mirror_url" for example,
S sudo cpan
cpan> o conf urllist push http://cpan.yahoo.com/
Here are other o conf related commands for use:
To view the urllist: o conf urllist
To remove the first url from the urllist: o conf urllist shift
To save the configuration after you made modification: o conf commit
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