Lots of packages to update but a number of -devel's are needed and not available:

MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm
(3/236): libmemcached-libs-1.0.18-14.fc29.x86_64.rpm                                                                                                                                                                                           318 kB/s | 130 kB     00:00
[MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm
(4/236): libyaz-5.14.11-14.fc29.x86_64.rpm                                                                                                                                                                                                     885 kB/s | 466 kB     00:00
[MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://kuiper.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://tde-mirror.yosemite.net/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://copernicus.mirrorservice.org/sites/trinitydesktop.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libart_lgpl-devel-2.3.22-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://mirror.ntmm.org/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm
[MIRROR] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: Status code: 404 for http://ftp.fau.de/trinity/trinity/rpm/f29/trinity-r14/RPMS/x86_64/libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm
[FAILED] libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: No more mirrors to try - All mirrors were already tried without success
(6-7/236): libtqt4-devel-4.2.0-14.0.6_1.fc29.x86_64.rpm                                                               0% [                                                                                                                   ] 1.1 MB/s | 1.2 MB     05:15 ETA
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: Error downloading packages:
  Cannot download libtqt3-mt-devel-3.5.0-14.0.6_1.fc29.x86_64.rpm: All mirrors were tried