我似乎陷入了巨大的混乱之中，希望有人能帮我解决。当我运行时，sudo apt upgrade我得到：
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies.
sabnzbdplus : Depends: python3-sabyenc but it is not installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
所以我运行sudo apt --fix-broken install，得到的结果如下：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
activity-log-manager advancecomp apport-symptoms apt-config-icons-hidpi apt-config-icons-large apt-config-icons-large-hidpi autopilot-qt4 autopilot-qt5 compton dc fbset gaviotatb gir1.2-accounts-1.0 gir1.2-accountsservice-1.0 gir1.2-bamf-3 gir1.2-gck-1 gir1.2-gcr-3 gir1.2-gdata-0.0 gir1.2-gdesktopenums-3.0
gir1.2-gdm-1.0 gir1.2-geoclue-2.0 gir1.2-gnomebluetooth-1.0 gir1.2-gnomedesktop-3.0 gir1.2-gst-plugins-base-1.0 gir1.2-gstreamer-1.0 gir1.2-gweather-3.0 gir1.2-json-1.0 gir1.2-mutter-2 gir1.2-nm-1.0 gir1.2-nma-1.0 gir1.2-signon-1.0 gir1.2-totem-1.0 gir1.2-totemplparser-1.0 gir1.2-upowerglib-1.0 gjs
gnome-shell-common gnome-system-monitor gnome-terminal-data gnome-user-guide gtk3-nocsd hud ippusbxd libasound2-dev libcairo-script-interpreter2 libcolumbus1-common libcolumbus1v5 libcompizconfig0 libconfig9 libdbus-1-dev libfdk-aac-dev libfdk-aac1 libflatpak0 libfontconfig1-dev libframe6 libfreetype6-dev
libfribidi-dev libgaviotatb1 libgeis1 libgeonames-common libgeonames0 libgjs0g libglewmx1.13 libgrail6 libgsettings-qt1 libgtk3-nocsd0 libio-multiplex-perl libmetacity1 libmirclient-dev libmircommon-dev libmircookie-dev libmircookie2 libmircore-dev libmozjs-52-0 libmp3lame-dev libnet-cidr-perl libnet-server-perl
libnet-snmp-perl libnetplan0 libnm-gtk0 libnux-4.0-0 libnux-4.0-common libopus-dev libpixman-1-dev libpng-dev libpng-tools libprotobuf-dev libpython3-dev libpython3.7-minimal libpython3.7-stdlib libqt5quickparticles5 libqt5quicktest5 libsane-hpaio libset-scalar-perl libsignon-glib1 libsndio-dev
libtimezonemap-data libtimezonemap1 libudev-dev libunity-control-center1 libunity-core-6.0-9 libunity-gtk2-parser0 libunity-misc4 libva-dev libva-glx2 libvdpau-dev libvpx-dev libx264-dev libx265-dev libxatracker2 libxcb-ewmh2 libxcb-shm0-dev libxcb-xrm0 libxcb-xtest0 libxcomposite-dev libxcursor-dev libxft-dev
libxi-dev libxinerama-dev libxkbcommon-dev libxpathselect1.4v5 libxrandr-dev libxrender-dev libxss-dev libxv-dev libzeitgeist-1.0-1 mate-applet-appmenu metacity-common mscompress munin-common munin-node munin-plugins-core munin-plugins-extra nux-tools ogmrip-dirac ogmrip-doc ogmrip-oggz ogmrip-plugins ogmtools
optipng plasma-discover-common python-apt python-contextlib2 python-debian python-decorator python-defer python-extras python-fixtures python-junitxml python-linecache2 python-mimeparse python-qt4-dbus python-subunit python-testscenarios python-testtools python-traceback2 python-unittest2 python3.7-minimal
qtdeclarative5-dev rofi session-shortcuts unity-asset-pool unity-lens-applications unity-lens-files unity-lens-music unity-lens-video unity-schemas unity-scope-video-remote vala-panel-appmenu-common vala-panel-appmenu-registrar vorbis-tools x11-apps x11-session-utils x11proto-composite-dev x11proto-randr-dev
x11proto-scrnsaver-dev x11proto-xinerama-dev xinit xinput xserver-xorg-input-all xserver-xorg-input-libinput xserver-xorg-input-synaptics xserver-xorg-input-wacom xserver-xorg-legacy xserver-xorg-video-all xserver-xorg-video-amdgpu xserver-xorg-video-ati xserver-xorg-video-fbdev xserver-xorg-video-intel
xserver-xorg-video-nouveau xserver-xorg-video-qxl xserver-xorg-video-radeon xserver-xorg-video-vesa xserver-xorg-video-vmware xwayland yasm
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
python3-sabyenc
The following packages will be REMOVED
libgksu2-0
The following NEW packages will be installed
python3-sabyenc
0 to upgrade, 1 to newly install, 1 to remove and 42 not to upgrade.
52 not fully installed or removed.
Need to get 0 B/55.3 kB of archives.
After this operation, 398 kB disk space will be freed.
Do you want to continue? [Y/n] Y
(Reading database ... 728280 files and directories currently installed.)
Removing libgksu2-0 (2.0.13~pre1-9ubuntu2) ...
/var/lib/dpkg/info/libgksu2-0.postrm: 15: /var/lib/dpkg/info/libgksu2-0.postrm: update-gconf-defaults: not found
dpkg: error processing package libgksu2-0 (--remove):
installed libgksu2-0 package post-removal script subprocess returned error exit status 127
Errors were encountered while processing:
libgksu2-0
E: Sub-process /usr/bin/dpkg returned an error code (1)
现在我陷入了困境，我在 Google 上搜索了好几个小时，尝试了各种方法来恢复我的系统，但似乎没有任何进展。有什么建议可以解决这个问题吗？