Same results trying to upgrade to #31 or #32

$sudo dnf upgrade --refresh
$sudo dnf install dnf-plugin-system-upgrade
$sudo dnf system-upgrade download --releasever=32 --allowerasing --skip-broken

Before you continue ensure that your system is fully upgraded by running "dnf --refresh upgrade". Do you want to continue [y/N]: y
Fedora Modular 32 - x86_64 144 kB/s | 16 kB 00:00
Fedora Modular 32 - x86_64 - Updates 116 kB/s | 16 kB 00:00
Fedora 32 - x86_64 - Updates 90 kB/s | 11 kB 00:00
Fedora 32 - x86_64 89 kB/s | 16 kB 00:00
RPM Fusion for Fedora 32 - Free - Updates 9.1 kB/s | 3.6 kB 00:00
RPM Fusion for Fedora 32 - Free 7.8 kB/s | 3.2 kB 00:00
RPM Fusion for Fedora 32 - Nonfree - Updates 5.8 kB/s | 2.9 kB 00:00
RPM Fusion for Fedora 32 - Nonfree 7.7 kB/s | 3.0 kB 00:00
Modular dependency problems:

Problem 1: conflicting requests
- nothing provides module(platform:f30) needed by module gimp:2.10:3020191106095052:a5b0195c-0.x86_64
Problem 2: conflicting requests
- nothing provides module(platform:f30) needed by module libgit2:0.27:3020190304180745:a5b0195c-0.x86_64
Error:
Problem 1: package grub2-tools-1:2.02-81.fc30.x86_64 requires librpm.so.8()(64bit), but none of the providers can be installed
- rpm-libs-4.14.2.1-5.fc30.x86_64 does not belong to a distupgrade repository
- problem with installed package grub2-tools-1:2.02-81.fc30.x86_64
Problem 2: package grub2-tools-1:2.02-81.fc30.x86_64 requires librpm.so.8()(64bit), but none of the providers can be installed
- package rpm-libs-4.14.2.1-5.fc30.x86_64 requires rpm = 4.14.2.1-5.fc30, but none of the providers can be installed
- package grub2-efi-ia32-1:2.02-81.fc30.x86_64 requires grub2-tools = 1:2.02-81.fc30, but none of the providers can be installed
- rpm-4.14.2.1-5.fc30.x86_64 does not belong to a distupgrade repository
- problem with installed package grub2-efi-ia32-1:2.02-81.fc30.x86_64
Problem 3: problem with installed package dnf-4.2.18-1.fc30.noarch
- package dnf-4.2.19-1.fc32.noarch requires python3-dnf = 4.2.19-1.fc32, but none of the providers can be installed
- package dnf-4.2.23-1.fc32.noarch requires python3-dnf = 4.2.23-1.fc32, but none of the providers can be installed
- package python3-dnf-4.2.19-1.fc32.noarch requires python3-rpm >= 4.14.0, but none of the providers can be installed
- package python3-dnf-4.2.23-1.fc32.noarch requires python3-rpm >= 4.14.0, but none of the providers can be installed
- package python3-rpm-4.15.1-3.fc32.1.x86_64 requires rpm-libs(x86-64) = 4.15.1-3.fc32.1, but none of the providers can be installed
- package python3-rpm-4.15.1-2.fc32.1.x86_64 requires rpm-libs(x86-64) = 4.15.1-2.fc32.1, but none of the providers can be installed
- cannot install both rpm-libs-4.15.1-3.fc32.1.x86_64 and rpm-libs-4.14.2.1-5.fc30.x86_64
- cannot install both rpm-libs-4.15.1-2.fc32.1.x86_64 and rpm-libs-4.14.2.1-5.fc30.x86_64
- package grub2-tools-1:2.02-81.fc30.x86_64 requires librpm.so.8()(64bit), but none of the providers can be installed
- package grub2-efi-x64-1:2.02-81.fc30.x86_64 requires grub2-tools = 1:2.02-81.fc30, but none of the providers can be installed
- python3-rpm-4.14.2.1-5.fc30.x86_64 does not belong to a distupgrade repository
- dnf-4.2.18-1.fc30.noarch does not belong to a distupgrade repository
- problem with installed package grub2-efi-x64-1:2.02-81.fc30.x86_64

it is fixable but a new clean install will be faster

you have a mix of fedora 30 and 32 rpm's \


uninstall all the fedora30 rpm's THEN run a update

In this case it will be longer to do a fresh install because of all the extra things I have installed, compiled and configured. If I remove the grub2 packages will it boot?

rpm -qa |grep fc32 shows zero fc32 packages.

rpm -qa |grep fc31 shows zero fc31 packages.

I had forgotten since it was so long ago - I excluded grub updates in dnf.conf.
I will post the results after I upgrade.

The problem was that grub was excluded in dnf.conf
Upgrade successful!