Thread:Project:Support desk/Database error after updating to 1.20.4/reply (4)

Ohh, I just found a change in MediaWiki, which might explain why the column is missing (and stays missing after running update.php): https://gerrit.wikimedia.org/r/#/c/17894/ It seems like it has been removed.

Then the question is: Why does MediaWiki still try to use it?

Check, that when you updated MediaWiki, you really deleted all old files and that you really added all new files.

Update your extensions to the newest version for MediaWiki 1.20. Maybe you are still using old versions, which use this field?

If there are some caches on the server, you might want to empty them as well.