This is a second instance. I'm including the entire post from our member.
Hope this email finds you well, and busy doing Stovebolt things. I'm just writing because I've gotten the following error now, twice, when replying to thread topics. Once in Big Bolts, once in the Engine Bay. Here's the text of said error, which occurs upon completing text entry and hitting 'Submit.':
Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, false given in /var/www/html/ubbthreads/libs/user.inc.php:608 Stack trace: #0 /var/www/html/ubbthreads/libs/user.inc.php(608): in_array() #1 /var/www/html/ubbthreads/scripts/addpost.inc.php(668): user->check_group_join() #2 /var/www/html/ubbthreads/ubbthreads.php(286): page_addpost_run() #3 {main} thrown in /var/www/html/ubbthreads/libs/user.inc.php on line 608
My post still seems to be posted, as the first time I saw this I hit the back button, then preview, where it looked OK. Then upon hitting Reply, I got a dialog stating that reply had already been posted and Reply button is disabled. Clicked OK to dismiss it. Then refreshed page, and my reply was there.
Hope this helps,
Bolton
PS many years ago, I tested software for a living. So as then, I tried to recreate my whole chain of events leading up to said error, and what happens next.