I get this:
t@fredrik-ThinkPad-T430s:/home/fredrik# ./installJRMC --install repo --compat --debug
Debug: Running: main --install repo --compat --debug
Debug: Running: init
Starting installJRMC
Debug: Detected host platform: zorin 16 amd64
Error: Autodetecting distro, this is unreliable and --compat may be required
Debug: Using host platform: ubuntu 16
Debug: Running: parseInput
Debug: Debugging on
Debug: installJRMC version: 1.0-rc9
Debug: Running: setMCVersion
Determining latest MC version
Debug: Running: installPackage --silent buildah
Debug: sudo apt-get -f install -y -q0 buildah
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package buildah
Debug: Running: installPackage wget
Debug: wget already installed, skipping installation
Using MC version 31.0.42 determined by webscrape
To override, use --mcversion
Debug: MVERSION: 31, MC_VERSION: 31.0.42, MC_PKG: mediacenter31, MC_RPM: /home/fredrik/output/RPMS/x86_64/mediacenter31-31.0.42.x86_64.rpm
Installing JRiver Media Center from remote repository
Debug: Running: installMCFromRepo
Debug: sudo rm -rf /etc/apt/sources.list.d/mediacenter*.list
Debug: Running: installPackage wget
Debug: wget already installed, skipping installation
Debug: sudo apt-get update -y -q0
Hit:1
http://ae.archive.ubuntu.com/ubuntu focal InRelease
Get:2
http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Hit:3
http://ppa.launchpad.net/camel-neeraj/sysmontask/ubuntu focal InRelease
Hit:4
http://archive.canonical.com/ubuntu focal InRelease
Get:5
http://ae.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Hit:6
https://download.mono-project.com/repo/ubuntu stable-focal InRelease
Hit:7
https://download.mono-project.com/repo/ubuntu stable-bionic InRelease
Hit:8
http://ppa.launchpad.net/zorinos/apps/ubuntu focal InRelease
Hit:9
http://dist.jriver.com/latest/mediacenter bullseye InRelease
Hit:10
http://ppa.launchpad.net/zorinos/drivers/ubuntu focal InRelease
Get:11
http://ae.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Hit:12
http://ppa.launchpad.net/zorinos/patches/ubuntu focal InRelease
Hit:13
https://packages.zorinos.com/stable focal InRelease
Get:14
http://ppa.launchpad.net/zorinos/stable/ubuntu focal InRelease [18.1 kB]
Hit:15
https://packages.zorinos.com/patches focal InRelease
Get:16
http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [59.9 kB]
Get:17
http://ae.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [2,735 kB]
Get:18
http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [869 kB]
Hit:19
https://packages.zorinos.com/apps focal InRelease
Hit:20
https://packages.zorinos.com/drivers focal InRelease
Get:21
http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [610 kB]
Get:22
http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [182 kB]
Get:23
http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [96.4 kB]
Get:24
http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 DEP-11 Metadata [940 B]
Hit:25
https://packages.zorinos.com/premium focal InRelease
Get:26
http://ae.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [861 kB]
Get:27
http://ae.archive.ubuntu.com/ubuntu focal-updates/main Translation-en [454 kB]
Get:28
http://ae.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [275 kB]
Get:29
http://ae.archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [17.0 kB]
Get:30
http://ae.archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [2,159 kB]
Get:31
http://ae.archive.ubuntu.com/ubuntu focal-updates/restricted Translation-en [302 kB]
Get:32
http://ae.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1,099 kB]
Get:33
http://ae.archive.ubuntu.com/ubuntu focal-updates/universe i386 Packages [742 kB]
Get:34
http://ae.archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [263 kB]
Get:35
http://ae.archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [410 kB]
Get:36
http://ae.archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [25.4 kB]
Get:37
http://ae.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 DEP-11 Metadata [944 B]
Get:38
http://ae.archive.ubuntu.com/ubuntu focal-backports/main amd64 DEP-11 Metadata [7,944 B]
Get:39
http://ae.archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [30.5 kB]
Fetched 11.6 MB in 4s (2,578 kB/s)
Reading package lists... Done
N: Skipping acquisition of configured file 'main/binary-i386/Packages', as repository '
https://download.mono-project.com/repo/ubuntu stable-focal InRelease' doesn't support architecture 'i386'
Debug: Running: installMesa
Debug: Running: installPackage --no-install-check --allow-downgrades --no-gpg-check mediacenter31
Debug: sudo apt-get -f install -y -q0 --allow-downgrades mediacenter31
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies.
mediacenter31 : Depends: libasound2 (>= 1.2.4)
Depends: libnss3 (>= 2:3.61) but 2:3.49.1-1ubuntu1.9 is to be installed
Depends: libnspr4 (>= 2:4.29) but 2:4.25-1 is to be installed
Depends: libfreetype6 (>= 2.10.4) but 2.10.1-2ubuntu0.3 is to be installed
Depends: libharfbuzz0b (>= 2.7.4) but 2.6.4-1ubuntu4.2 is to be installed
Depends: libva2 (>= 2.10.0) but 2.7.0-2 is to be installed
Depends: libva-drm2 (>= 2.10) but 2.7.0-2 is to be installed
Depends: libvulkan1 (>= 1.2.162) but 1.2.131.2-1 is to be installed
E: Unable to correct problems, you have held broken packages.
Error: Failed to install mediacenter31. Attempting to continue
Error: Package install failed!
Error: JRiver Media Center installation from remote repository failed