Latest Fedora delivers 6.73 version. Upstream released 6.75. When you have free time, please upgrade it.
https://bodhi.fedoraproject.org/updates/FEDORA-2018-10b1729086 was created to update the package in Fedora 29.
perl-Date-Manip-6.75-1.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.