Problem after Plesk upgrade script

[Aniello Martuscelli]

Username:

TITLE

Problem after Plesk upgrade script

PRODUCT, VERSION, OPERATING SYSTEM, ARCHITECTURE

Plesk 18.0.75
Ubuntu 20.04.06 x86_64

PROBLEM DESCRIPTION

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.
ERROR: Upgrade step 2025-11-05-09-56-08_FixGrantPrivileges.php failed with code 1 and output:
INFO: Executing upgrade task: 2025-11-05-09-56-08
[2026-01-16 15:41:30.170] 20155:696a4e1a29925 ERR [panel] SQLSTATE[HY000] [2002] Connection refused:
0: /opt/psa/admin/plib/Upgrade/upgrade.php:46
ERROR: Plesk\Upgrade\Exception: SQLSTATE[HY000] [2002] Connection refused (upgrade.php:46)
0: /opt/psa/admin/plib/Upgrade/upgrade.php:46

Some steps of upgrade failed. Run upgrade with option --repair to rerun failed steps.


Warning: execute post install/upgrade actions

Starting forced Plesk Key upgrade task

**** Package plesk-core scriptlet failed.

***** installation problem report *****
Warning: execute post install/upgrade actions
STOP plesk-core-18.0 upgrading AT Fri Jan 16 15:41:30 CET 2026
START plesk-l10n-18.0 installing AT Fri Jan 16 15:41:30 CET 2026
Trying to start service mariadb... active
done
Trying to establish test connection... connected
done

**** Package plesk-l10n scriptlet completed successfully.

STOP plesk-l10n-18.0 installing AT Fri Jan 16 15:41:30 CET 2026
START plesk-backup-utilities-18.0 installing AT Fri Jan 16 15:41:30 CET 2026

**** Package plesk-backup-utilities scriptlet completed successfully.

STOP plesk-backup-utilities-18.0 installing AT Fri Jan 16 15:41:30 CET 2026

**** Product post-install for BASE completed with warnings.

***** installation problem report *****
Warning: execute post install/upgrade actions
STOP plesk-core-18.0 upgrading AT Fri Jan 16 15:41:30 CET 2026: PROBLEMS FOUND
STOP Bootstrapper 18.0.75 post-install for BASE AT Fri Jan 16 15:41:30 CET 2026
START Bootstrapper 18.0.75 perform-deferred-actions AT Fri Jan 16 15:41:30 CET 2026

**** Product perform-deferred-actions started.
Trying to restart service apache2... active
done
Warning: INFO: [Fri Jan 16 15:41:43 CET 2026]: Service: dovecot, Action: reload-or-restart
Trying to reload-or-restart service dovecot...

***** problem report *****
Warning: reload-or-restart service dovecot failed

/opt/psa/admin/sbin/pleskrc execution failed:
Job for dovecot.service failed because the control process exited with error code.
See "systemctl status dovecot.service" and "journalctl -xe" for details.



Warning : failed to perform deferred action : mail_restore_imap_pop3
SUCCESS: Upgrade step Plesk\Upgrade\Action_UpgradeExtensions was successfully done.
done

**** Product perform-deferred-actions completed successfully.

STOP Bootstrapper 18.0.75 perform-deferred-actions AT Fri Jan 16 15:41:47 CET 2026
START update_history
Trying to start service mariadb... active
done
Trying to establish test connection... connected
done

**** [update_history] completed successfully.

STOP update_history

STEPS TO REPRODUCE

Update plesk normally from web update tool

ACTUAL RESULT

Errors in log, but updater after finish, plesk works correctly

EXPECTED RESULT

No error

ANY ADDITIONAL INFORMATION

I had the same problem in upgrading Plesk from the latest 18.0.74 to the latest 18.0.75 on both ubuntu 20.04.06 and newer distros

YOUR EXPECTATIONS FROM PLESK SERVICE TEAM

Help with sorting out

 

[Sebahat.hadzhi]

Hello, @Aniello Martuscelli . Please execute the following command and provide us with the output:

plesk -v

Additionally, please provide us with the entries from /var/log/plesk/install/autoinstaller3.log related to the latest update. Thank you in advance for your cooperation.