I'm trying to upgrade CiviCRM on my Wordpress website from 5.25.0 to 5.28.0. I've already completed upgrade in the past, so I know how to do it.

When I try to update the database, upgrade stay stuck on "[Executed: Rebuild Multilingal Schema]", and then become after few minutes "[Executed: undefined]".

  • I try to update to 5.26.0 and it's ok.
  • Then to 5.27.0 and ok too.
  • But with 5.28.0 it's not ok...

I tried to enable debug mod, but it don't give me more details, excepte when I try to update the database again: Update error log

I don't know where else to look, can you help me?


Update 2020-08-19:

I tried to disable all extension, downgrade Wordpress to 5.4.2, and tried to install again 5.28.0 update, but same issue... Here is a video of the progress of the update: https://streamable.com/5fubww

  • I think that particular error is saying you tried to upgrade a second time after the first one failed and now the system is inconsistent. Are you able to restore from backup and try again? One thing that sometimes hurts multilingual during upgrades is advanced logging, at Administer - System Settings - Misc, so if you turn that off before the upgrade that might help. You can turn it back on again after.
    – Demerit
    Aug 19 '20 at 0:16
  • @Demerit I restored a backup, disabled logging, tried again to upload version 5.28.0 and update the database, and still the same error. Aug 19 '20 at 2:26

I noticed the 5.28.2 update that was just released includes release notes that specify the 5.28.2 update includes a fix for issues that may occur during the upgrade process:


Per the release notes, this patch was originally published in 5.27.1. However, it was not initially ported to the concurrent 5.28.beta1.

The 5.28.2 release is now available for download, so it may fix the upgrade issue:


Please Note: If CiviCRM was originally installed on your website with version <=4.6, PRIOR TO THE UPGRADE PROCESS for CiviCRM 5.29.0 (next release) you may need to change/update the civicrm.settings.php, Directories, and Resource URLs configuration settings:



Here is the solution, it solved my issue!


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