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 MANIFEST to the distribution. Your buildtool should be able to autogenerate it (eg "make manifest" or "./Build manifest")
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.
Add tests!
Change the permissions of Build.PL/Makefile.PL to not-executable.
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: Cannot find MANIFEST in dist.
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: PDF/PDF/Core.pm -- Around line 880: =back doesn't take any parameters, but you said =back 4 PDF/PDF.pm -- Around line 120: =back doesn't take any parameters, but you said =back 4
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
Add tests or move tests.pl to the t/ directory!
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: PDF, PDF::Core, PDF::Parse
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.
