I have a forum self-hosted forums. I woke up this morning to find an error on the homepage, just above the chatbox:
[[Template core/front/global/updateWarning is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
I see this error every time, whether I'm using the default theme or the custom theme I'm currently using. I also can't access the AdminCP, as trying to do so results in a blank page with this line:
[[Template core/admin/global/globalTemplate is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
I don’t know what’s causing this error because I haven't updated anything on the forum or the server for several months. The error just appeared suddenly on its own. I contacted the hosting admin, who says there are no issues on their end, and they haven’t made any recent changes.
Here’s what I’ve tried so far to fix this error:
I set the forum to Recovery Mode (by adding an entry to constants.php). This only made the forum switch to the default theme, but I still see the same errors as before, and I still can’t access the AdminCP. Basically followed this: https://invisioncommunity.com/4guides/client-services/getting-support-r292/
I downloaded the latest version of IPB, uploaded its files to the forum folder on my server, then accessed the /admin/upgrade/ URL and ran the upgrade, which completed successfully.
I deleted the contents of the Datastore folder.
I see those errors only on the admin account, as normal user the forum seem to work as usual.