Hello. I just completed an upgrade from 1.15.4 to 1.17.2. Changed PHP version from 7.4 to 8.1 and cannot view the agent panel or modify any queues inside of Settings - Tickets - Queues. Agent panel is a blank page, when opening any queue and clicking on any setting at the top of that queue (Columns, Sort, Conditions etc..) nothing happens when clicking until you refresh the page to click in a different setting. We do have Custom Queues setup but even the normal "Open" one cannot view settings in without more errors in the log.
PHP Fatal Error Log: (URL Changed in Log)
[Sat Dec 03 10:43:40.119736 2022] [php:error] [pid 34194] [client 10.0.1.1:49761] PHP Fatal error: Uncaught Error: Class name must be a valid object or a string in /var/www/os_ticket/upload/include/class.forms.php:1167\nStack trace:\n#0 /var/www/os_ticket/upload/include/class.dynamic_forms.php(650): FormField->getImpl()\n#1 /var/www/os_ticket/upload/include/class.queue.php(372): DynamicFormField->__call()\n#2 /var/www/os_ticket/upload/include/class.queue.php(319): CustomQueue::getSearchableFields()\n#3 /var/www/os_ticket/upload/include/class.queue.php(967): CustomQueue->getSupportedMatches()\n#4 /var/www/os_ticket/upload/include/class.queue.php(901): CustomQueue->mangleQuerySet()\n#5 /var/www/os_ticket/upload/include/class.queue.php(895): CustomQueue->getBasicQuery()\n#6 /var/www/os_ticket/upload/include/class.queue.php(914): CustomQueue->getBasicQuery()\n#7 /var/www/os_ticket/upload/scp/tickets.php(557): CustomQueue->getQuery()\n#8 /var/www/os_ticket/upload/scp/index.php(17): require('...')\n#9 {main}\n thrown in /var/www/os_ticket/upload/include/class.forms.php on line 1167, referer: https://helpdesk.WEBSITE.com/scp/system.php
Thank you for any assistance.