Ubuntu 18.04 to 20.04 - Unresolved issue occured while calculating upgrade

I'm trying to upgrade my ubuntu distro from 18.04 lts to 20.04 lts and I get this error message while it's calculating data,

An unresolvable problem occurred while calculating the upgrade.

This was caused by: * Upgrading to a pre-release version of Ubuntu This is most likely a transient problem, please try again later. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

The output from the command grep Broken /var/log/dist-upgrade/apt.log is,

Broken dpkg:amd64 Breaks on libapt-pkg5.0:amd64 < 1.6.12 @ii mK > (< 1.7~b)
Broken libqt5core5a:amd64 Breaks on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mK > (< 4:4.8.7+dfsg-20~)
Broken libuno-sal3:amd64 Breaks on uno-libs3:amd64 < 6.0.7-0ubuntu0.18.04.10 @ii mK >
Broken libqtgui4:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python2:amd64 Breaks on python:amd64 < 2.7.15~rc1-1 @ii mK > (< 2.7.15-2)
Broken libqt4-declarative:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken qt-at-spi:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8~)
Broken libpyside-py3-1.2:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.7.0)
Broken libpyside1.2:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.7.0)
Broken python2-minimal:amd64 Breaks on python-minimal:amd64 < 2.7.15~rc1-1 @ii mK > (< 2.7.15-2)
Broken libpython2-stdlib:amd64 Breaks on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii mK > (< 2.7.15-2)
Broken libqtdbus4:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python3-pyside.qtcore:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtcore:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken gnome-settings-daemon-common:amd64 Breaks on gnome-settings-daemon-schemas:amd64 < 3.28.1-0ubuntu1.3 @ii mK > (< 3.30.1.2-2~)
Broken libqt4-network:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python3-pyside.qtgui:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtgui:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libqt4-xml:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-sql:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libsensors-config:amd64 Conflicts on libsensors4:amd64 < 1:3.4.0-4 @ii mK >
Broken libqt4-dbus:amd64 Depends on libqtdbus4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken g++:amd64 Depends on g++-9:amd64 < none | 9.3.0-10ubuntu2 @un uH > (>= 9.3.0-3~)
Broken libqt4-script:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-sql-sqlite:amd64 Depends on libqt4-sql:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-sql-mysql:amd64 Depends on libqt4-sql:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python-six:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken libhdf5-103:amd64 Depends on libgfortran5:amd64 < none | 10-20200411-0ubuntu1 @un uH > (>= 8)
Broken libqt4-xmlpatterns:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python-enum34:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken liblapack3:amd64 Depends on libgfortran5:amd64 < none | 10-20200411-0ubuntu1 @un uH > (>= 8)
Broken slurm-wlm-basic-plugins:amd64 Depends on libhdf5-103:amd64 < none | 1.10.4+repack-11ubuntu1 @un uH >
Broken libpython2-dev:amd64 Breaks on libpython-dev:amd64 < 2.7.15~rc1-1 @ii mK > (< 2.7.15-2)
Broken libqt4-opengl:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libphonon4:amd64 Depends on libqt4-dbus:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8.1)
Broken python-all:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (= 2.7.17-2ubuntu4)
Broken python-pkg-resources:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken python-ipaddress:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken python2-dev:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (= 2.7.17-2ubuntu4)
Broken slurm-client:amd64 Depends on libhdf5-103:amd64 < none | 1.10.4+repack-11ubuntu1 @un uH >
Broken python-cairo:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libldb2:amd64 Breaks on libldb1:amd64 < 2:1.2.3-1ubuntu0.1 @ii mK > (< 2:2~)
Broken python-crypto:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libtinyxml2-6a:amd64 Conflicts on libtinyxml2-6:amd64 < 6.0.0+dfsg-1 @ii mK >
Broken qdbus:amd64 Depends on libqt4-xml:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python-all-dev:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (= 2.7.17-2ubuntu4)
Broken python-xdg:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken python-keyring:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken python-dbus:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken python-entrypoints:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken python3-pyside.qtnetwork:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libatlas3-base:amd64 Depends on libgfortran5:amd64 < none | 10-20200411-0ubuntu1 @un uH > (>= 8)
Broken python-setuptools:amd64 Depends on python-pkg-resources:amd64 < 39.0.1-2 | 44.0.0-2 @ii umH > (= 44.0.0-2)
Broken python-pyside.qtnetwork:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-cryptography:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libqt4-svg:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python-cffi-backend:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libqca2:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8.0)
Broken python-asn1crypto:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken libqca2-plugins:amd64 Depends on libqca2:amd64 < 2.1.3-2ubuntu2 @ii mR > (= 2.1.3-2ubuntu2)
Broken libqt4-help:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken phonon:amd64 Depends on libphonon4:amd64 < 4:4.10.0-2 @ii mR > (>= 4:4.10.0-2)
Broken python-gi-cairo:amd64 Depends on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (= 3.36.0-1)
Broken python-idna:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken libqtwebkit4:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.7.0~beta1)
Broken libatlas-base-dev:amd64 Depends on libatlas3-base:amd64 < 3.10.3-5 | 3.10.3-8ubuntu7 @ii umH > (= 3.10.3-8ubuntu7)
Broken python-psutil:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken python-pyside.qtxml:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-configparser:amd64 Depends on python2:any:any < none @un H > (< 2.8)
Broken libqt4-scripttools:amd64 Depends on libqt4-script:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken fwupdate:amd64 Breaks on fwupdate-signed:amd64 < 12-7~ubuntu18.04.3 @ii mK >
Broken fwupdate:amd64 Breaks on libfwup1:amd64 < 12-3bionic2 @ii mK > (< 12-5)
Broken libqt4-test:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken python3-pyside.qtxml:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken slurm-wlm-torque:amd64 Depends on slurm-client:amd64 < 17.11.2-1build1 | 19.05.5-1 @ii umH > (>= 19.05.5-1)
Broken gfortran:amd64 Depends on gfortran-9:amd64 < none | 9.3.0-10ubuntu2 @un uH > (>= 9.3.0-3~)
Broken liblapack-dev:amd64 Depends on liblapack3:amd64 < 3.7.1-4ubuntu1 | 3.9.0-1build1 @ii umH > (= 3.9.0-1build1)
Broken python-pyside.qtscript:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libqxt-core0:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8.0)
Broken python3-pyside.qtscript:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qthelp:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libfreeipmi16:amd64 Depends on freeipmi-common:amd64 < 1.4.11-1.1ubuntu4.1 -> 1.6.4-3ubuntu1 @ii umU > (= 1.4.11-1.1ubuntu4.1)
Broken python-pyside.qtsvg:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libpolkit-qt-1-1:amd64 Depends on libqt4-dbus:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.5.3)
Broken python-pyside.phonon:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qthelp:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtwebkit:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libedata-book-1.2-25:amd64 Depends on libebackend-1.2-10:amd64 < 3.28.5-0ubuntu0.18.04.2 -> 3.36.1-2 @ii umU > (= 3.28.5-0ubuntu0.18.04.2)
Broken phonon-backend-gstreamer:amd64 Depends on phonon-backend-gstreamer-common:amd64 < 4:4.9.0-1 -> 4:4.10.0-1build1 @ii umU > (= 4:4.9.0-1)
Broken python3-pyside.qtsvg:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken policykit-1-fingerprint-gui:amd64 Depends on libpolkit-qt-1-1:amd64 < 0.112.0-5 @ii mR > (>= 0.99.0)
Broken python3-pyside.qtsql:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qtopengl:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtdeclarative:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qtdeclarative:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtsql:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken libqjson0:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.7.0~beta1)
Broken python-pyside.qttest:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.phonon:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qttest:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pyside.qtopengl:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken fingerprint-gui:amd64 Depends on libqca2:amd64 < 2.1.3-2ubuntu2 @ii mR > (>= 2.0.2)
Broken libpango1.0-0:amd64 Depends on libpango-1.0-0:amd64 < 1.40.14-1ubuntu0.1 -> 1.44.7-2ubuntu4 @ii umU > (= 1.40.14-1ubuntu0.1)
Broken python-pyside.qtuitools:amd64 Depends on libpyside1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qtuitools:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python3-pyside.qtwebkit:amd64 Depends on libpyside-py3-1.2:amd64 < 1.2.2+source1-3 @ii mR > (= 1.2.2+source1-3)
Broken python-pip:amd64 Depends on python-pip-whl:amd64 < 9.0.1-2.3~ubuntu1.18.04.1 -> 20.0.2-5ubuntu1 @ii umU > (= 9.0.1-2.3~ubuntu1.18.04.1)
Broken libmygpo-qt1:amd64 Depends on libqjson0:amd64 < 0.8.1-3 @ii mR > (>= 0.7.1)
Broken libcupsppdc1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.8 -> 2.3.1-9ubuntu1.1 @ii umU > (= 2.2.7-1ubuntu2.8)
Broken libedata-cal-1.2-28:amd64 Depends on libebackend-1.2-10:amd64 < 3.28.5-0ubuntu0.18.04.2 -> 3.36.1-2 @ii umU > (= 3.28.5-0ubuntu0.18.04.2)
Broken libept1.5.0:amd64 Depends on libapt-pkg5.0:amd64 < 1.6.12 @ii mR > (>= 1.1~exp9)
Broken libipmimonitoring5a:amd64 Depends on libfreeipmi16:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.4.4)
Broken libcupsmime1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.8 -> 2.3.1-9ubuntu1.1 @ii umU > (= 2.2.7-1ubuntu2.8)
Broken libpolkit-backend-1-0:amd64 Depends on libpolkit-gobject-1-0:amd64 < 0.105-20ubuntu0.18.04.5 -> 0.105-26ubuntu1 @ii umU > (= 0.105-20ubuntu0.18.04.5)
Broken libqxt-gui0:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8.0~)
Broken libsnmp30:amd64 Depends on libsensors4:amd64 < 1:3.4.0-4 @ii mR > (>= 1:3.0.0)
Broken python3-pyside:amd64 Depends on python3-pyside.phonon:amd64 < 1.2.2+source1-3 @ii mR > (>= 1.2.2+source1-3)
Broken libcupscgi1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.8 -> 2.3.1-9ubuntu1.1 @ii umU > (= 2.2.7-1ubuntu2.8)
Broken python-pyside:amd64 Depends on python-pyside.phonon:amd64 < 1.2.2+source1-3 @ii mR > (>= 1.2.2+source1-3)
Broken libapt-inst2.0:amd64 Depends on libapt-pkg5.0:amd64 < 1.6.12 @ii mR > (>= 1.1~exp9)
Broken libebook-1.2-19:amd64 Depends on libedata-book-1.2-25:amd64 < 3.28.5-0ubuntu0.18.04.2 @ii mR > (= 3.28.5-0ubuntu0.18.04.2)
Broken liblastfm1:amd64 Depends on libqt4-dbus:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.5.3)
Broken python-dev:amd64 Depends on libpython-dev:amd64 < 2.7.15~rc1-1 @ii mR > (= 2.7.15~rc1-1)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken build-essential:amd64 Depends on g++:amd64 < 4:7.4.0-1ubuntu2.3 | 4:9.3.0-1ubuntu2 @ii umH > (>= 4:9.2)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken slurm-wlm-basic-plugins:amd64 Depends on libipmimonitoring5a:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.1.5)
Broken libipmimonitoring5a:amd64 Depends on libfreeipmi16:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.4.4)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken slurm-wlm-basic-plugins:amd64 Depends on libipmimonitoring5a:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.1.5)
Broken libipmimonitoring5a:amd64 Depends on libfreeipmi16:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.4.4)
Broken libipmimonitoring5a:amd64 Depends on freeipmi-common:amd64 < 1.4.11-1.1ubuntu4.1 -> 1.6.4-3ubuntu1 @ii umU > (= 1.4.11-1.1ubuntu4.1)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libfreeipmi16:amd64 Depends on freeipmi-common:amd64 < 1.4.11-1.1ubuntu4.1 -> 1.6.4-3ubuntu1 @ii umU > (= 1.4.11-1.1ubuntu4.1)
Broken libipmimonitoring5a:amd64 Depends on libfreeipmi16:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.4.4)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken slurm-wlm-basic-plugins:amd64 Depends on libipmimonitoring5a:amd64 < 1.4.11-1.1ubuntu4.1 @ii mR > (>= 1.1.5)
Broken slurm-client:amd64 Depends on slurm-wlm-basic-plugins:amd64 < 17.11.2-1build1 | 19.05.5-1 @ii umR > (= 17.11.2-1build1)
Broken slurm-wlm-torque:amd64 Depends on slurm-client:amd64 < 17.11.2-1build1 | 19.05.5-1 @ii umR > (>= 17.11.2-1build1)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)
Broken libgirepository-1.0-1:amd64 Breaks on python-gi:amd64 < 3.26.1-2ubuntu1 | 3.36.0-1 @ii umH > (< 3.34.0-4~)
Broken python-gi:amd64 Depends on python2:amd64 < none | 2.7.17-2ubuntu4 @un uH > (< 2.8)

and the main.log file contains,

2020-05-14 01:35:01,901 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-05-14 01:35:01,901 INFO uname information: 'Linux Inspiron-5570 4.15.0-99-generic #100-Ubuntu SMP Wed Apr 22 20:32:56 UTC 2020 x86_64'
2020-05-14 01:35:02,351 INFO apt version: '1.6.12'
2020-05-14 01:35:02,352 INFO python version: '3.6.9 (default, Apr 18 2020, 01:56:04) 
[GCC 8.4.0]'
2020-05-14 01:35:02,355 INFO release-upgrader version '20.04.19' started
2020-05-14 01:35:02,418 INFO locale: 'en_US' 'UTF-8'
2020-05-14 01:35:02,653 DEBUG Using 'DistUpgradeViewGtk3' view
2020-05-14 01:35:02,700 DEBUG enable dpkg --force-overwrite
2020-05-14 01:35:02,719 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-05-14 01:35:05,705 DEBUG lsb-release: 'bionic'
2020-05-14 01:35:05,705 DEBUG _pythonSymlinkCheck run
2020-05-14 01:35:05,728 DEBUG openCache()
2020-05-14 01:35:05,729 DEBUG quirks: running PreCacheOpen
2020-05-14 01:35:05,729 DEBUG running Quirks.PreCacheOpen
2020-05-14 01:35:06,368 DEBUG /openCache(), new cache size 97092
2020-05-14 01:35:06,371 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-05-14 01:35:06,371 DEBUG checkViewDepends()
2020-05-14 01:35:06,372 DEBUG running doUpdate() (showErrors=False)
2020-05-14 01:35:09,086 DEBUG openCache()
2020-05-14 01:35:09,771 DEBUG /openCache(), new cache size 97092
2020-05-14 01:35:09,772 DEBUG doPostInitialUpdate
2020-05-14 01:35:09,772 DEBUG quirks: running focalPostInitialUpdate
2020-05-14 01:35:09,772 DEBUG running Quirks.focalPostInitialUpdate
2020-05-14 01:35:12,956 DEBUG Snap core18 is installed
2020-05-14 01:35:13,222 DEBUG Snap gnome-3-34-1804 is installed
2020-05-14 01:35:13,224 DEBUG Snap gnome-3-34-1804 is not tracking the release channel
2020-05-14 01:35:13,513 DEBUG Snap gtk-common-themes is installed
2020-05-14 01:35:14,022 DEBUG Snap gnome-3-28-1804 is installed
2020-05-14 01:35:14,023 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-05-14 01:35:14,621 DEBUG Snap gnome-characters is installed
2020-05-14 01:35:14,928 DEBUG Snap gnome-logs is installed
2020-05-14 01:35:17,173 DEBUG MetaPkgs: ubuntu-desktop
2020-05-14 01:35:19,334 DEBUG Foreign: 
2020-05-14 01:35:19,334 DEBUG Obsolete: anydesk code cpp-9 filemanager-actions filemanager-actions-nautilus-extension fingerprint-gui flash-plugin flat-remix-gnome gcc-10-base gcc-10-base:i386 gcc-9 gcc-9-base gcc-9-base:i386 google-chrome-stable grub-customizer indicator-netspeed-unity libbsapi libgcc-9-dev libgcc-s1 libgcc-s1:i386 policykit-1-fingerprint-gui skypeforlinux spotify-client sublime-text teams timeshift uniform-icons wolframscript
2020-05-14 01:35:19,335 DEBUG updateSourcesList()
2020-05-14 01:35:25,637 DEBUG rewriteSourcesList() with mirror_check
2020-05-14 01:35:25,638 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2020-05-14 01:35:25,638 DEBUG Checking pkg: ubuntu-minimal
2020-05-14 01:35:25,643 DEBUG Checking pkg: ubuntu-standard
2020-05-14 01:35:25,647 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse'
2020-05-14 01:35:25,648 DEBUG verifySourcesListEntry: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
2020-05-14 01:35:25,648 DEBUG url_downloadable: http://archive.ubuntu.com/ubuntu/dists/focal/Release
2020-05-14 01:35:25,648 DEBUG s='http' n='archive.ubuntu.com' p='/ubuntu/dists/focal/Release' q='' f=''
2020-05-14 01:35:25,928 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse' updated to new dist
2020-05-14 01:35:25,928 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse'
2020-05-14 01:35:25,928 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse' updated to new dist
2020-05-14 01:35:25,929 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu bionic-security main restricted universe multiverse'
2020-05-14 01:35:25,929 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu focal-security main restricted universe multiverse' updated to new dist
2020-05-14 01:35:25,934 DEBUG running doUpdate() (showErrors=True)
2020-05-14 01:36:28,983 DEBUG openCache()
2020-05-14 01:36:29,497 DEBUG /openCache(), new cache size 65466
2020-05-14 01:36:29,498 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-05-14 01:36:45,649 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2020-05-14 01:36:45,671 DEBUG abort called
2020-05-14 01:36:45,680 DEBUG openCache()
2020-05-14 01:36:47,981 DEBUG /openCache(), new cache size 97092

I know there must be something wrong with my python installations but I don't know how to fix it. My theory is that I hold packages that are different from the default ubuntu 18.04 ones and the installer does not know what to do with them.

It has been quite frustrating so I would appreciate it if you had any ideas.

Thank you in advance