sudo apt-get install --reinstall gnome-control-center
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:
 gnome-control-center : Depends: libgsound0 (>= 1.0.1) but it is not going to be installed
                        Depends: libnm0 (>= 1.11.90) but 1.10.6-2ubuntu1.4 is to be installed
                        Depends: gnome-control-center-data (>= 1:3.36.5-0ubuntu4) but 1:3.28.2-0ubuntu0.18.04.6 is to be installed
                        Recommends: rygel but it is not going to be installed or
                                    rygel-tracker but it is not going to be installed
 libgcc1 : Depends: gcc-9-base (= 9.1.0-2ubuntu2~14.04.2) but 9.4.0-1ubuntu1~20.04.1 is to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
user@user-computer:~$ sudo apt --fix-broken install
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:
  ash breeze-icon-theme ca-certificates-mono calibre-bin fonts-opensymbol gcc-9-base:i386 gir1.2-clutter-gst-3.0 gir1.2-gepub-0.6 gir1.2-mutter-2 gstreamer1.0-gtk3 icoutils kde-runtime-data kde-style-breeze kdelibs5-data libabw-0.1-1
  libarmadillo8 libavahi-client3:i386 libboost-date-time1.65.1 libboost-iostreams1.65.1 libboost-locale1.65.1 libboost-serialization1.65.1 libcairo2:i386 libcharls1 libclass-data-inheritable-perl libclass-method-modifiers-perl
  libclucene-contribs1v5 libclucene-core1v5 libcrypt-openssl-bignum-perl libcrypt-openssl-random-perl libcrypt-openssl-rsa-perl libctemplate3 libcups2:i386 libcwidget3v5 libdata-random-perl libdlrestrictions1 libdouble-conversion1
  libe-book-0.1-1 libebook-contacts-1.2-2 libeot0 libepubgen-0.1-1 libexttextcat-2.0-0 libffi6:i386 libfreehand-0.1-1 libgd-perl libgdcm2.8 libgeos-3.6.2 libgeotiff2 libgepub-0.6-0 libgles2-mesa-dev libglew2.0 libglvnd-core-dev
  libgpgme++2v5 libgphoto2-l10n libgssapi-krb5-2:i386 libgtkimageview0 libgutenprint2 libhogweed4:i386 libhttp-server-simple-perl libicu-le-hb-dev libicu-le-hb0 libicu60:i386 libiculx60 libjbig0:i386 libjpeg-turbo8:i386 libjpeg8:i386
  libjs-coffeescript libk5crypto3:i386 libkeyutils1:i386 libkf5style5 libkonq5-templates libkrb5-3:i386 libkrb5support0:i386 liblcms2-2:i386 liblog4cplus-1.1-9 liblzo2-2:i386 libmono-data-tds4.0-cil libmouse-perl libmozjs-52-0
  libmspub-0.1-1 libmutter-2-0 libmysqlcppconn7v5 libmythes-1.2-0 libnet-dropbox-api-perl libnet-oauth-perl libnettle6:i386 libnm-gtk0 libnspr4:i386 libnss3:i386 libntrack0 libodfgen-0.1-1 libopencv-core3.2 libopencv-imgproc3.2
  libopencv-ml3.2 libopencv-video3.2 libopenjp2-7:i386 libopenshot14 libopenvdb5.0 libpagemaker-0.0-0 libpangox-1.0-0 libpath-class-perl libperl5.26 libpixman-1-0:i386 libpodofo0.9.5 libpodofo0.9.6 libproc-processtable-perl
  libproc-simple-perl libpython3.6-dev libqgsttools-p1 libqpdf21 libreadline7:i386 libruby2.5 libsasl2-modules:i386 libshiboken1.2v5 libsort-naturally-perl libspiro0 libstdc++-5-dev libstreamanalyzer0v5 libstreams0v5 libtdb1:i386
  libtidy-0.99-0 libunique-1.0-0 libvsqlitepp3v5 libwacom-bin libwnck-common libwnck22 libwww-mechanize-perl libx11-protocol-other-perl libx11-xcb-dev libxcb-dri2-0-dev libxcb-dri3-dev libxcb-glx0-dev libxcb-present-dev
  libxcb-randr0-dev libxcb-render0:i386 libxcb-shape0-dev libxcb-shm0:i386 libxcb-sync-dev libxcb-xfixes0-dev libxshmfence-dev libxxf86vm-dev libyaml-cpp0.5v5 lp-solve mysql-utilities mysql-workbench-data ntrack-module-libnl-0
  opencv-data oxygen-icon-theme phonon-backend-gstreamer-common python-apsw python-certifi python-cherrypy3 python-configobj python-cssselect python-cssutils python-dateutil python-dnspython python-feedparser python-html5-parser
  python-keyring python-markdown python-mechanize python-msgpack python-mysql.connector python-netifaces python-pyodbc python-pyparsing python-pysqlite2 python-regex python-repoze.lru python-requests python-routes python-secretstorage
  python-setproctitle python-simplejson python-sip python-talloc python-utidylib python-webob python-wheel python-xlib python-yaml python3-feedparser python3.6-dev qpdf qt4-doc qtcore4-l10n ruby-did-you-mean ruby2.5
  unity-scope-calculator unity-scope-chromiumbookmarks unity-scope-colourlovers unity-scope-devhelp unity-scope-firefoxbookmarks unity-scope-manpages unity-scope-openclipart unity-scope-texdoc unity-scope-tomboy unity-scope-zotero
  x11proto-composite-dev x11proto-damage-dev x11proto-fixes-dev x11proto-kb-dev x11proto-xf86vidmode-dev
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  libgcc1
The following packages will be upgraded:
  libgcc1
1 upgraded, 0 newly installed, 0 to remove and 1815 not upgraded.
Need to get 0 B/41,7 kB of archives.
After this operation, 15,4 kB disk space will be freed.
Do you want to continue? [Y/n] y
dpkg: error processing archive /var/cache/apt/archives/libgcc1_1%3a10.3.0-1ubuntu1~20.04_amd64.deb (--unpack):
 package libgcc1:amd64 (1:10.3.0-1ubuntu1~20.04) with field 'Multi-Arch: no' is not co-installable with libgcc1 which has multiple installed instances
Errors were encountered while processing:
 /var/cache/apt/archives/libgcc1_1%3a10.3.0-1ubuntu1~20.04_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)