Most probably CPANTS databases are being regenerated from scratch due to major changes in Kwalitee metrics or updates of relevant modules/perl. Usually this maintenance takes about a day or two, and some of the information may be old or missing tentatively. Sorry for the inconvenience.
Add a META.yml to the distribution. Your buildtool should be able to autogenerate it.
Add a Changelog (best named 'Changes') to the distribution. It should list at least major changes implemented in newer versions.
Run a proper command ("make manifest" or "./Build manifest", maybe with a force option), or use a distribution builder to generate the MANIFEST. Or update MANIFEST manually.
Error:
List all used modules in META.yml requires
Error:
Make sure that the main module name and version are the same of the distribution.
Remove the POD errors. You can check for POD errors automatically by including Test::Pod to your test suite.
Error: DBD-Chart-0.74/Chart/Plot.pm -- Around line 4440: You forgot a '=back' before '=head1' Around line 4476: '=item' outside of any '=over' Around line 4656: You forgot a '=back' before '=head2' Around line 4771: '=item' outside of any '=over' Around line 4813: You forgot a '=back' before '=head1' Around line 4815: '=item' outside of any '=over' Around line 4825: You forgot a '=back' before '=head1'
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
Define the license if you are using in Build.PL. If you are using MakeMaker (Makefile.PL) you should upgrade to ExtUtils::MakeMaker version 6.31.
Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.
Error: DBD::Chart, DBD::Chart::Plot
List all modules used in the test suite in META.yml test_requires
Error:
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.