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.
Remove all letters from the version number. If you want to mark a release as a developer release, use the scheme 'Module-1.00_01'
Change the permissions of Build.PL/Makefile.PL to not-executable.
List all used modules in META.yml requires
Error:
Make sure that the main module name and version are the same of the distribution.
Add a META.json to the distribution. Your buildtool should be able to autogenerate it.
Use the prompt() method from ExtUtils::MakeMaker/Module::Build.
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: HTML::WikiConverter::DokuWikiFCK, HTML::WikiConverter::DokuWikiFCKN
Split the distribution, or fix the version numbers to make them consistent (use the highest version number to avoid version downgrade).
Error: 0.28,0.32
This is not a critical issue. Currently mainly informative for the CPANTS authors. It might be removed later.