Attached the error below, occurred after an upgrade and unsure of where/how to fix this issue. Thanks in advance!
Looks like the database structure update wasn't correct on upgrade to MyBB 1815.
What is the suggested course of action to take care of this?
You could remove the "lock" file from install folder and re-run the upgrade script.
YOUR-FORUM-URL/install/upgrade.php
@Wires - You're right...this is also possible, but the safer way is to run the update script because there could be more changes than only one missing column.