Upgrade error: Rebuild Multilingal Schema
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:
https://github.com/civicrm/civicrm-core/blob/5.28.2/release-notes/5.28.2.md#bugs
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:
https://civicrm.org/download
Please Note: If CiviCRM was originally installed on your website with version &lt;=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:
https://docs.civicrm.org/sysadmin/en/latest/upgrade/version-specific/#civicrm-5.29