The leapp preupgrade fails with error: file XXX from install of python2-idna-XXX.noarch conflicts with file from package python-idna-YYY.el7.noarch

Issue

• The leapp preupgrade fails with error: file XXX from install of python2-idna-XXX.noarch conflicts with file from package python-idna-YYY.el7.noarch

  Risk Factor: high (error)
  Title: DNF execution failed with non zero exit code.
  Summary: {"hint": "If there was a problem reaching remote content (see stderr output) and proxy is configured in the YUM/DNF configuration file, the proxy configuration is likely causing this error. Make sure the proxy is properly configured in /etc/dnf/dnf.conf. It's als
  o possible the proxy settings in the DNF configuration file are incompatible with the target system. A compatible configuration can be placed in /etc/leapp/files/dnf.conf which, if present, it will be used during some parts of the upgrade instead of original /etc/dnf/dnf.
  conf. In such case the configuration will also be applied to the target system. Note that /etc/dnf/dnf.conf needs to be still configured correctly for your current system to pass the early phases of the upgrade process.", "STDERR": "Failed to create directory /var/lib/lea
  pp/el8userspace//sys/fs/selinux: Read-only file system
  Failed to create directory /var/lib/leapp/el8userspace//sys/fs/selinux: Read-only file system
  Warning: Package marked by Leapp to install not found in repositories metadata: uom-lib-javadoc si-units-javadoc pcp-parfait-agent unit-api-javadoc parfait-javadoc uom-systems-javadoc uom-se-javadoc log4j12 parfait-examples
  Warning: Package marked by Leapp to upgrade not found in repositories metadata: gpg-pubkey leapp-upgrade-el7toel8 leapp python2-leapp
  RPM: warning: Generating 6 missing index(es), please wait...
  Error: Transaction test error:
  file /usr/lib/python2.7/site-packages/idna/__init__.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna
  -2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/__init__.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/codec.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/codec.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/compat.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/compat.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/core.py from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/core.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/core.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/idnadata.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/idnadata.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/intranges.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/intranges.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/uts46data.pyc from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch
  file /usr/lib/python2.7/site-packages/idna/uts46data.pyo from install of python2-idna-2.5-7.module+el8.1.0+3111+de3f2d8e.noarch conflicts with file from package python-idna-2.4-1.el7.noarch