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Plesk Update Manager fails on the RHEL-based OS of version 8.5: 'NoneType' object has no attribute 'run_sack'

Jose Flores
Updated
kb: bug kb: fixed Plesk for Linux

Applicable to:

  • Plesk for Linux

Symptoms

  • Updating system packages through Plesk fails on the RHEL 8.5 based distros (RHEL/CentOS/AlmaLinux)

    'NoneType' object has no attribute 'run_sack'

  • The issue does not occur on the RHEL 8.4 based distributions.

Cause

Product issue PPPM-13304, fixed in release 18.0.39.

Resolution

Update Plesk

Update Plesk to the fixed version (recommended).

Workaround

If an update is not possible, patch the panel manually.

  1. Connect to the server over SSH

  2. Run this command to replace the updater with the patched version

    # cp -a /usr/local/psa/admin/sbin/pum_worker{,.bak} && wget -O /usr/local/psa/admin/sbin/pum_worker https://support.plesk.com/hc/en-us/article_attachments/12387464256023 && chmod 750 /usr/local/psa/admin/sbin/pum_worker

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