Spam Queue items have no content
I'm sure this is a simple issue but I've tried my best to debug it and can't find the problem. I recently migrated my previous Vanilla install from v2 to v3 (2021.009) by creating a completely new installation and then brining my old database across while updating it using the utility/update and utility/structure tools built into Vanilla.
I've got everything working apart from the Spam Queue. both Akismet and StopForumSpam are enabled and seem to be working in that they are adding items to the spam queue, but all items are devoid of content, so I can't tell whether they are actually spam or not! Please see attached screenshot.
If I try to mark an item as "Not Spam", I get the error message "Email is required. Name is required. Password is required." - consistent with a complete lack of content for the items. I've enabled logging but there is nothing useful in the log.
This looks to me like a database issue but I can't find it. Any advice please?
Many thanks in advance!