Nextcloud Internal server error after app updates

I probably should not have done this, but I saw a notification that some of the nextcloud apps, like onlyoffice, theming, pdfviewer, etc. had updates. So, I updated with from the GUI. Not I get this:

Internal Server Error

The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

I’ve disabled Onlyoffice, files_pdfviewer, and theming using occ command, but no luck. I should also mention that my data directory is on a usb drive, not the microSD.

Can anyone help me? I don’t want to have to reinstall the whole thing if I don’t have to. Thanks.

So, after a lot of googling and such, I found a solution. You need to truncate the oc_filecache table in mysql/MariaDB