What happened?

My website has been updated from version 5.4.8 to version 6.2-beta1. When I try to save the material, I get an error: “Failed to save item: Unknown column ‘access’ in ‘field list’.”
How can I fix it?

Version

6.2

Expected result

Saved material

Actual result

Failed to save item: Unknown column ‘access’ in ‘field list’.

System Information

Parameter Value
Joomla version Joomla! 6.2.0-beta1 Beta [ Mwezi ] 18-August-2026 18:00 UTC
Joomla Backward Compatibility Plugin Enabled (classes_aliases:"1", legacy_classes:"1")
PHP version 8.4.6
PHP platform Linux perun.beget.ru 5.10.258-0-beget-acl #1 SMP Mon Jun 8 11:35:04 UTC 2026 x86_64
Database type mysql
Database version 8.4.8-8-beget-1-2
Database encoding utf8mb4_unicode_ci
Database connection encoding utf8mb4_0900_ai_ci
Database connection encryption: No
The server supports encryption: No
Server: Apache/2.4.63 (Unix)
Interface between the server and PHP: apache2handler
User-agent string: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/27.0 Safari/605.1.15

Additional Comments

No response