Issue Error System Updates

[theplaza]

Server operating system version

Ubuntu 24.04.5 LTS

Plesk version and microupdate number

18.0.82

Hello,

How can I solve this problem: Error: Cannot get package list: 2026-11-04 09:44:23 INFO: pum is called with arguments: ['--list', '--repo-info', '--json'] 2026-11-04 09:44:23 ERROR: Previous Plesk installer call finished unsuccessfully. PUM will not perform any update operations until Plesk installation is fixed. 2026-11-04 09:44:23 ERROR: Exited with returncode 50.

Thank you

 

[Sebahat.hadzhi]

Hi, @theplaza . Could you please run plesk repair installation and confirm if any issues are reported? Thank you in advance.

 

[theplaza]

Hi! here is the report:
plesk repair installation

Reconfiguring the Plesk installation

Started bootstrapper repair procedure. This may take a while.
Certain actions may be skipped if not applicable.

Finishing up upgrade procedures and rerunning previously failed upgrade actions...
===> Cumulative Plesk database upgrade and repair (revertable stage) has been started.
===> Preparing Plesk database upgrade (revertable stage).
===> Cumulative upgrade and repair of Plesk database (revertable stage) has been completed.
===> Plesk database scheme upgrade has been started.
Applying migrations from: /opt/psa/bootstrapper/pp18.0.82-bootstrapper/migrations/
===> Plesk database scheme upgrade has been completed.
===> Cumulative Plesk upgrade and repair (final stage) has been started.
===> Preparing Plesk upgrade (final stage).
===> Cumulative upgrade and repair of Plesk (final stage) has been completed.
Reconfiguring mail subsystem...
Reconfiguring Apache web server...
Reconfiguring ProFTPD FTP server...
===> Configuring ProFTPD server
Restoring SELinux contexts...
Reconfiguring SSL ciphers and protocols...
Regenerating web servers' configuration files...
Cleaning active Panel sessions...
Fixing permissions on Panel packages files
The file '/var/parallels/autoinstaller-installation-failure.flag' is present, which may indicate problems with recent update.
Please check '/var/log/plesk/install/plesk_18.0.82_repair.log' for details

Check:

tail -n 50 /var/log/plesk/install/plesk_18.0.82_repair.log
INFO: Executing upgrade task: 2019-04-25-14-46-58 (forced)
SUCCESS: Upgrade step 2019-04-25-14-46-58_ReportUsage.php was successfully done.
INFO: Executing upgrade task: 2020-03-19-17-13-39 (forced)
SUCCESS: Upgrade step 2020-03-19-17-13-39_UpgradeExtensions.php was successfully done.
done
===> Cumulative Plesk upgrade and repair (final stage) has been started.
Upgrade or repair for 'core' (stage 'post') is not required
===> Preparing Plesk upgrade (final stage).
===> Cumulative upgrade and repair of Plesk (final stage) has been completed.
Reconfiguring mail subsystem...
Trying to execute plesk repair mail to synchronize mail server settings and Plesk Database...
Repairing the mail server configuration
Reconfiguring all domains and mailboxes ......................... [OK]

Error messages: 0; Warnings: 0; Errors resolved: 0

Reconfiguring Apache web server...
Reconfiguring ProFTPD FTP server...
Restoring SELinux contexts...
Trying to register service sw-cp-server... Trying to enable automatic respawn for service sw-cp-server.service... done
done
Trying to register service sw-engine... Trying to enable automatic respawn for service sw-engine.service... done
done
Trying to register service dovecot... Trying to enable automatic respawn for service dovecot.service... done
done
Trying to register service pc-remote... Trying to enable automatic respawn for service pc-remote.service... done
done
Trying to register service nginx... Trying to enable automatic respawn for service nginx.service... done
done
Trying to register service psa... Trying to enable automatic respawn for service psa.service... done
done
Reconfiguring SSL ciphers and protocols...
Trying to configure SSL ciphers and protocols for: ... done
Regenerating web servers' configuration files...
Cleaning active Panel sessions...
Fixing permissions on Panel packages files
The file '/var/parallels/autoinstaller-installation-failure.flag' is present, which may indicate problems with recent update.
Please check '/var/log/plesk/install/plesk_18.0.82_repair.log' for details

Bootstrapper repair finished.
If problems persist, please check installer logs ('/var/log/plesk/install/plesk_18.0.82_repair.log' and '/var/log/plesk/install/plesk_18.0.82_repair_problems.log') for errors.
If you can't resolve the issue on your own, please address Plesk support.
Trying to restart service apache2... active
done
SUCCESS: Upgrade step Plesk\Upgrade\Action_UpgradeExtensions was successfully done.
done

**** Product repair completed successfully.

 

[Andrea Bampi]

same here on two brand new VPSs with Ubuntu 24.04.5 and Plesk 18.0.82#1, after this morning's update. Both updated "correctly" and panel+sites work fine, but something broke the updating system / pum and now a "Check Updates" click fails with the same error

 

[theplaza]

Following Sebahat's advice, it seems to be unblocked now. But I wanted confirmation from the log.