I opened a support ticket. Brooks looked at the site and said it was working as expected. So, I dumped all the Stovebolt data in Safari, and the dashboard worked again. Made one change in the dashboard and bam, the error was back. So, I dumped all the data again. Then I disabled debugging. We'll see if that was what was causing the issue.

The Stovebolt Geek
https://www.stovebolt.com/ubbthreads/ubbthreads.php

Server Information
UBB.threads Version 8.0.0
Release 20240826
Server OS Linux
Server Load 0.11
Web Server Apache/2.4.37
PHP Version 8.3.11
MYSQL Version 8.0.39
Database Size 1.82 GB