I cannot "qubes-gpg-split-dom0" on QubesOS. why?

I want to use Split GPG with QubesOS. https://www.qubes-os.org/doc/split-gpg/
However, an error has occurred and cannot be done.
The content of the error.

https://ftp-stud.hs-esslingen.de/pub/Mirrors/archive.fedoraproject.org/fedora/1inux/updat es/25/x86_64/ repodat a/b94977172dc 0781 147253c 23a82962680 1504 fd l d20 Sed? efe739b752fce4556 - primary . sqlite.bz2: [Ermo 14] curl#56 -“GnuTLS recv error (-9): Error decoding the received TLS packet.”
Trying other mirror.
Running transaction check
Package qubes-gpg-split-dome.x86 64 0:2.e.38-1. fc25 will be reinstalled
Finished Dependency Resolution
https://ftp.halifax.rwth-aachen.de/qubes/repo/yum/r4.0/cur rent/dom0/fc25/rpa/qubes-gpg-split-dom 0 - 2 . 0 . 38 -1. fc25.x86 64. rpa: (Errno 12] Timeout on ht tps : // ftp, halifax.rwth-aachen.de/qubes/repo/yum/r4.0/current/dom0/fc25/rpm/qubes-gpg-split-dom-2.0.38-1.fc25. x86_64. rpm: (28, ‘Connection time-out’)
Trying other airror.
qubes-gpg-split - dom0 -2.0.38-1. fc25.x86 64, rpa
find: /var/1ib/qubes/dom0 - updat es/var/cache: No such file or directory