I run sudo dnf update on my Fedora 30 and after downloading packages I got this error:
[DRPM] hplip-common-3.19.12-1.fc30_3.19.12-2.fc30.x86_64.drpm: done
--------------------------------------------------------------------------------
Total 677 kB/s | 1.0 GB 26:51
Delta RPMs reduced 1066.4 MB of updates to 1066.3 MB (0.1% saved)
Running transaction check
Transaction check succeeded.
Running transaction test
The downloaded packages were saved in cache until the next successful transaction.
You can remove cached packages by executing 'dnf clean packages'.
Error: Transaction check error:
file /usr/share/man/man5/idmapd.conf.5.gz from install of nfs-utils-1:2.4.2-3.rc3.fc30.x86_64 conflicts with file from package libnfsidmap-1:2.3.3-7.rc2.fc30.x86_64
Error Summary
-------------
Please, tell me, how can I fix this problem?
I haven't found a better solution than to exclude nfs-utils packages from upgrade as described here. That works for me.