Dear all, I'm trying to open old tickets closed in past, but now I get this php error: addMissingFields
How I can fix them?
AH01071: Got error 'PHP message: PHP Fatal error: Uncaught Error: Class name must be a valid object or a string in /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.forms.php:1167\nStack trace:\n#0 /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.dynamic_forms.php(650): FormField->getImpl()\n#1 /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.dynamic_forms.php(1448): DynamicFormField->__call()\n#2 /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.dynamic_forms.php(1091): DynamicFormEntryAnswer->getField()\n#3 /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.dynamic_forms.php(1281): DynamicFormEntry->getFields()\n#4 /var/www/vhosts/support.XXXXXXXXXXX.com/include/staff/ticket-view.inc.php(953): DynamicFormEntry->addMissingFields()\n#5 /var/www/vhosts/support.XXXXXXXXXXX.com/scp/tickets.php(569): require_once('...')\n#6 {main}\n thrown in /var/www/vhosts/support.XXXXXXXXXXX.com/include/class.forms.php on line 1167'