New installation failure

No. Everything is up to date

I’m at something of a loss, I can’t see any reason for this to happen.

Could you run the following and dump the output (it may take some time to run)

find / -type f -name "*mono*" 2>/dev/null
# find / -type f -name "*mono*" 2>/dev/null
/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/etc/fonts/conf.avail/30-droid-noto-mono.conf
/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/var/lib/swcatalog/icons/ubuntu-jammy-universe/64x64@2/fonts-paratype_ptmono-regular.png
/var/lib/swcatalog/icons/ubuntu-jammy-universe/64x64/chromono_chromono.png
/var/lib/swcatalog/icons/ubuntu-jammy-universe/64x64/monodoc-http_monodoc.png
/var/lib/swcatalog/icons/ubuntu-jammy-universe/64x64/fonts-paratype_ptmono-regular.png
/var/lib/swcatalog/icons/ubuntu-jammy-universe/48x48/fonts-paratype_ptmono-regular.png
/var/lib/swcatalog/icons/ubuntu-jammy-multiverse/64x64@2/fonts-ibm-plex_ibmplexmono-regular.png
/var/lib/swcatalog/icons/ubuntu-jammy-multiverse/64x64/fonts-ibm-plex_ibmplexmono-regular.png
/var/lib/swcatalog/icons/ubuntu-jammy-multiverse/48x48/fonts-ibm-plex_ibmplexmono-regular.png
/var/lib/dpkg/info/fonts-tlwg-mono.prerm
/var/lib/dpkg/info/fonts-tlwg-mono.postinst
/var/lib/dpkg/info/fonts-noto-mono.md5sums
/var/lib/dpkg/info/fonts-tlwg-mono-ttf.md5sums
/var/lib/dpkg/info/ubuntu-mono.list
/var/lib/dpkg/info/fonts-tlwg-mono.postrm
/var/lib/dpkg/info/fonts-noto-mono.conffiles
/var/lib/dpkg/info/fonts-tlwg-mono.md5sums
/var/lib/dpkg/info/ubuntu-mono.postrm
/var/lib/dpkg/info/fonts-tlwg-mono.list
/var/lib/dpkg/info/fonts-tlwg-mono.preinst
/var/lib/dpkg/info/fonts-tlwg-mono-ttf.list
/var/lib/dpkg/info/fonts-noto-mono.list
/sys/module/snd_timer/parameters/timer_tstamp_monotonic
/snap/core20/1891/usr/lib/terminfo/x/xterm-mono
/snap/core20/1891/usr/share/bash-completion/completions/monodevelop
/snap/core20/1879/usr/lib/terminfo/x/xterm-mono
/snap/core20/1879/usr/share/bash-completion/completions/monodevelop
/snap/gtk-common-themes/1535/share/icons/Ambiant-MATE/status/16/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Ambiant-MATE/status/22/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Ambiant-MATE/status/24/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Humanity/categories/48/applications-monodevelopment.svg
/snap/gtk-common-themes/1535/share/icons/Radiant-MATE/status/16/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Radiant-MATE/status/22/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Radiant-MATE/status/24/steam_tray_mono.svg
/snap/gtk-common-themes/1535/share/icons/Yaru/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru/48x48/devices/audio-speaker-mono.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-bark/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-blue/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-magenta/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-mate/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-olive/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-prussiangreen/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-purple/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-red/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-sage/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/Yaru-viridian/48x48/devices/audio-speaker-mono-testing.svg
/snap/gtk-common-themes/1535/share/icons/elementary-xfce/categories/48/applications-monodevelopment.png
/snap/core22/634/usr/lib/terminfo/x/xterm-mono
/snap/core22/634/usr/share/bash-completion/completions/monodevelop
/snap/core22/617/usr/lib/terminfo/x/xterm-mono
/snap/core22/617/usr/share/bash-completion/completions/monodevelop
/snap/gnome-3-38-2004/140/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/gnome-3-38-2004/140/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/gnome-3-38-2004/140/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/gnome-3-38-2004/140/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/gnome-3-38-2004/140/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/gnome-3-38-2004/140/usr/share/fontconfig/conf.avail/64-23-tlwg-mono.conf
/snap/gnome-3-38-2004/140/usr/share/fontconfig/conf.avail/urw-nimbus-mono-ps.conf
/snap/gnome-3-38-2004/137/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/gnome-3-38-2004/137/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/gnome-3-38-2004/137/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/gnome-3-38-2004/137/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/gnome-3-38-2004/137/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/gnome-3-38-2004/137/usr/share/fontconfig/conf.avail/64-23-tlwg-mono.conf
/snap/gnome-3-38-2004/137/usr/share/fontconfig/conf.avail/urw-nimbus-mono-ps.conf
/snap/gnome-42-2204/99/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/gnome-42-2204/99/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/gnome-42-2204/99/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/gnome-42-2204/99/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/gnome-42-2204/99/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/gnome-42-2204/99/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmonoscope.so
/snap/gnome-42-2204/102/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/gnome-42-2204/102/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/gnome-42-2204/102/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/gnome-42-2204/102/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/gnome-42-2204/102/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/gnome-42-2204/102/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmonoscope.so
/snap/snap-store/959/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/snap-store/959/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/snap-store/959/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/snap-store/959/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/snap-store/959/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/snap-store/638/etc/fonts/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf
/snap/snap-store/638/etc/fonts/conf.avail/20-unhint-small-dejavu-sans-mono.conf
/snap/snap-store/638/etc/fonts/conf.avail/53-monospace-lcd-filter.conf
/snap/snap-store/638/etc/fonts/conf.avail/57-dejavu-sans-mono.conf
/snap/snap-store/638/etc/fonts/conf.avail/58-dejavu-lgc-sans-mono.conf
/snap/snap-store/638/usr/share/icons/Humanity/categories/48/applications-monodevelopment.svg
/usr/lib/python3/dist-packages/pygments/styles/__pycache__/monokai.cpython-310.pyc
/usr/lib/python3/dist-packages/pygments/styles/monokai.py
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstmonoscope.so
/usr/lib/modules/5.19.0-42-generic/kernel/drivers/media/radio/radio-raremono.ko
/usr/lib/modules/5.19.0-41-generic/kernel/drivers/media/radio/radio-raremono.ko
/usr/lib/terminfo/x/xterm-mono
/usr/lib/firmware/intel/sof-tplg/sof-cml-rt711-rt1308-mono-rt715.tplg
/usr/lib/firmware/intel/sof-tplg/sof-tgl-rt711-l0-rt1316-l1-mono-rt714-l3.tplg
/usr/lib/firmware/intel/sof-tplg/sof-tgl-rt715-rt711-rt1308-mono.tplg
/usr/lib/firmware/intel/sof-tplg/sof-tgl-rt711-rt1308-mono-rt715.tplg
/usr/lib/firmware/intel/sof-tplg/sof-adl-rt1316-l2-mono-rt714-l3.tplg
/usr/lib/firmware/intel/sof-tplg/sof-adl-rt1316-l2-mono-rt714-l0.tplg
/usr/share/webmin/authentic-theme/unauthenticated/LICENSES/googlefonts-roboto-mono
/usr/share/bash-completion/completions/monodevelop
/usr/share/icons/Yaru-sage/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-prussiangreen/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-purple/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-olive/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-bark/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-blue/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-red/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-viridian/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru-magenta/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/icons/Yaru/48x48/devices/audio-speaker-mono.svg
/usr/share/icons/Yaru/48x48/devices/audio-speaker-mono-testing.svg
/usr/share/source-highlight/mono-alt.css
/usr/share/source-highlight/mono.css
/usr/share/fontconfig/conf.avail/urw-nimbus-mono-ps.conf
/usr/share/fontconfig/conf.avail/64-23-tlwg-mono.conf
/usr/share/terminfo/q/qnxtmono
/usr/share/terminfo/m/mono-emx
/usr/share/terminfo/i/ibmmono
/usr/share/ppd/cupsfilters/pxlmono.ppd
/usr/share/pulseaudio/alsa-mixer/paths/usb-gaming-headset-output-mono.conf
/usr/share/pulseaudio/alsa-mixer/paths/analog-output-mono.conf

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