Yum fails to resolve dependencies in Plesk for CentOS/RHEL: package is a duplicate with

Symptoms

• Updating Plesk or system packages via Plesk fails:

  Update failed.
  INFO: pum is called with arguments: ['--update', '--json', '--', 'binutils', 'dnsmasq', 'docker-engine', 'initscripts', 'iptables', 'kexec-tools', 'libgomp', 'microcode_ctl', 'net-snmp', 'plesk-git-http', 'polkit', 'tuned', 'wget', 'wpa_supplicant']

  ---

  ERROR: [u'ERROR with transaction check vs depsolve:', 'systemd = 219-67.el7_7.2 is needed by (installed) systemd-sysv-219-67.el7_7.2.x86_64', 'systemd = 219-67.el7_7.2 is needed by (installed) systemd-sysv-219-67.el7_7.2.x86_64', 'firewalld-filesystem = 0.6.3-2.el7_7.2 is needed by firewalld-0.6.3-2.el7_7.2.noarch', 'python-firewall = 0.6.3-2.el7_7.2 is needed by firewalld-0.6.3-2.el7_7.2.noarch', 'device-mapper-event-libs = 7:1.02.158-2.el7_7.2 is needed by (installed) device-mapper-event-7:1.02.158-2.el7_7.2.x86_64', 'device-mapper-event-libs = 7:1.02.158-2.el7_7.2 is needed by (installed) device-mapper-event-7:1.02.158-2.el7_7.2.x86_64']
  ERROR: Exited with returncode 1.

  ---

  ERROR: Your package system contains duplicated packages, which can lead to broken Plesk update:
  psa-libxml-proxy-2.9.7-2.centos.7+p18.0.23.0+t191224.1303.x86_64
  psa-libxml-proxy-2.9.7-2.centos.7+p18.0.27.0+t200427.1027.x86_64
  plesk-dovecot-core-2.3.10-2.centos.7+p18.0.26.0+t200410.1427.x86_64
  plesk-dovecot-core-2.3.10-2.centos.7+p18.0.27.0+t200422.1107.x86_64

• The following message is shown in the menu Websites & Domains > System Overview > Check for Updates > Install Updates:

  Warning: Information on some packages might not be actual: inconsistencies were detected in the system's package manager database. Please resolve this issue manually.

• The following error message appears in the log file /var/log/plesk/panel.log, where <package_name1> and <package_name2> can be any package name:

  ERROR: Exited with returncode 1.
  ERR [panel] Task failed: id=19, pid=39949, type=pum-update-packages, error=2018-02-08 INFO: pum is called with arguments: ['--update', '--json', '--', <package_name1>, <package_name2>, ...]
  INFO: updating packages: <package_name1>, <package_name2>, ...
  ERROR: Test Transaction Errors: package <package_name1>-2.0.14-17.2.el7.x86_64 (which is newer than <package_name1>-2.0.14-17.el7.x86_64) is already installed
  package <package_name2>-2.8.0-5.el7_4.2.noarch (which is newer than <package_name2>-2.8.0-5.el7.noarch) is already installed
  ...

• When updating the packages manually with the command yum update, the process fails due to package duplicates with the following error messages:

  Error: Package: 1:<package_name1>-1.0.6-31.el7_2.x86_64 (@updates)
  Requires: <package_name1>-libnm(x86-64) = 1:1.0.6-31.el7_2
  Installed: 1:<package_name1>-libnm-1.8.0-11.el7_4.x86_64 (@updates)
  <package_name1>-libnm(x86-64) = 1:1.8.0-11.el7_4
  Available: 1:<package_name1>-libnm-1.8.0-9.el7.x86_64 (base)
  <package_name1>-libnm(x86-64) = 1:1.8.0-9.el7
  ...
  You could try using --skip-broken to work around the problem
  ** Found 47 pre-existing rpmdb problem(s), 'yum check' output follows:
  <package_name2>-5.6.27-centos7.16101710.x86_64 has missing requires of <package_name2> = ('0', '5.6.27', 'centos7.16101710')
  <package_name2>-5.6.33-centos7.18010913.x86_64 is a duplicate with <package_name2>-5.6.27-centos7.16101710.x86_64

Cause

Duplicated packages in the RPM database.

Note: The cause of this behavior is related to the incorrect operations that are done by the system's utility yum. Sometimes the packages might get duplicated, for example, due to the cached packages that…