I have version 3.3.6 of @stoo2000's great application Trader Feedback System:
 

It was all working perfectly, however since upgrading to PHP 8.x and the latest forum software the profile tabs have stopped appearing (though have been no change to the user group settings) and when I go to Community > Trading Feedback > Settings, I get the following error:
 

Quote

TypeError: count(): Argument #1 ($value) must be of type Countable|array, bool given (0)
#0 /var/www/clients/client1/web3/web/system/Dispatcher/Controller.php(118): IPS\feedback\modules\admin\settings\_settings->manage()
#1 /var/www/clients/client1/web3/web/applications/feedback/modules/admin/settings/settings.php(34): IPS\Dispatcher\_Controller->execute()
#2 /var/www/clients/client1/web3/web/system/Dispatcher/Dispatcher.php(153): IPS\feedback\modules\admin\settings\_settings->execute()
#3 /var/www/clients/client1/web3/web/admin/index.php(13): IPS\_Dispatcher->run()
#4 {main}

There were a few resent errors on my board with things that needed some fields in the database to be removed or old plugins to be removed. Do anyone know what could be causing the above error?

Thanks in advance again to the great support of the invision support forum!

You’ll need to contact the author of that application for assistance. From the application’s support notes:

Technical Support

If you have an active purchase of the application, you can obtain technical support from the help desk portal: https://ipb.silvesterwebdesigns.com/support You will need to register an account.

There's a couple posts about this on the Marketplace topic

Short story is, an updated release is imminent.