Hello, liangsuilong This is a fairly minor problem, but the package metadata for perl-Gtk2-Unique is out-of-date. It currently lists the project's URL as https://live.gnome.org/LibUnique. but GNOME no longer uses the "live" subdomain; requests now get redirected to the wiki. The newer equivalent URL is https://wiki.gnome.org/Attic/LibUnique ...but that page says libunique is deprecated and offers a link to the GtkApplication porting guide. (I'm filing this same bug report for multiple packages, so I apologize if you see this issue twice.)
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
perl-Gtk2-Unique and perl-Gtk2-Unique-devel still use the old live.gnome.org domain. I wondered briefly if maybe the package should just be removed, if upstream isn't developing it anymore. From a quick dnf repoquery, it seems only pacmanager still requires perl-Gtk2-Unique, and nothing seems to require the -devel package. But I'm not sure whether or how much pacmanager is still used. At the very least, it would still make sense to update the package URL, as I noted in my original comment.
This bug appears to have been reported against 'rawhide' during the Fedora 29 development cycle. Changing version to '29'.
I've submitted a pull-request to do this.
This message is a reminder that Fedora 29 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora 29 on 2019-11-26. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '29'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 29 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
URL was updated at some point to Meta CPAN. Belated thanks!