The site is under maintenance.
Most probably the CPANTS databases are being regenerated from scratch behind the scenes due to the major change in Kwalitee metrics or the update 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.
Markdent-0.15 has the following 3 errors.
|valid_signature||WARNING: This key is not certified with a trusted signature!
Primary key fingerprint: 289E 9EB5 50BD 9C89 15E3 5FAF 2203 02B1 5F2A BD12